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34331431 = 151122721
BaseRepresentation
bin1000001011110…
…1101100100111
32101121012212111
42002331230213
532242101211
63223501451
7564545431
oct202755447
971535774
1034331431
1118419792
12b5b7887
137160674
1447b9651
153032421
hex20bdb27

34331431 has 4 divisors (see below), whose sum is σ = 34355664. Its totient is φ = 34307200.

The previous prime is 34331399. The next prime is 34331441. The reversal of 34331431 is 13413343.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34331431 - 25 = 34331399 is a prime.

It is a super-2 number, since 2×343314312 = 2357294309015522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34331441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9850 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (8588916).

Almost surely, 234331431 is an apocalyptic number.

34331431 is a deficient number, since it is larger than the sum of its proper divisors (24233).

34331431 is a wasteful number, since it uses less digits than its factorization.

34331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24232.

The product of its digits is 1296, while the sum is 22.

The square root of 34331431 is about 5859.3029448903. The cubic root of 34331431 is about 325.0104328012.

Adding to 34331431 its reverse (13413343), we get a palindrome (47744774).

The spelling of 34331431 in words is "thirty-four million, three hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 1511 22721 34331431