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31343144310 = 2325643541613
BaseRepresentation
bin11101001100001100…
…100110110101110110
32222220100122200222200
4131030030212311312
51003142321104220
622222052205330
72156466221322
oct351414466566
988810580880
1031343144310
111232442a255
1260a8909846
132c56727b4a
14173499a982
15c369dc890
hex74c326d76

31343144310 has 48 divisors (see below), whose sum is σ = 81619063344. Its totient is φ = 8345157696.

The previous prime is 31343144299. The next prime is 31343144353. The reversal of 31343144310 is 1344134313.

31343144310 is a `hidden beast` number, since 3 + 1 + 34 + 314 + 4 + 310 = 666.

It is a super-2 number, since 2×313431443102 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212937 + ... + 328676.

It is an arithmetic number, because the mean of its divisors is an integer number (1700397153).

Almost surely, 231343144310 is an apocalyptic number.

31343144310 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31343144310 is an abundant number, since it is smaller than the sum of its proper divisors (50275919034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31343144310 is a wasteful number, since it uses less digits than its factorization.

31343144310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542269 (or 542266 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31343144310 its reverse (1344134313), we get a palindrome (32687278623).

The spelling of 31343144310 in words is "thirty-one billion, three hundred forty-three million, one hundred forty-four thousand, three hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 643 1286 1929 3215 3858 5787 6430 9645 11574 19290 28935 57870 541613 1083226 1624839 2708065 3249678 4874517 5416130 8124195 9749034 16248390 24372585 48745170 348257159 696514318 1044771477 1741285795 2089542954 3134314431 3482571590 5223857385 6268628862 10447714770 15671572155 31343144310