Search a number
-
+
30102331 = 723593169
BaseRepresentation
bin111001011010…
…1001100111011
32002122100122011
41302311030323
530201233311
62553110351
7513602620
oct162651473
962570564
1030102331
1115aa0366
12a0b83b7
13630c73c
143dd8347
152999321
hex1cb533b

30102331 has 16 divisors (see below), whose sum is σ = 36518400. Its totient is φ = 24254208.

The previous prime is 30102329. The next prime is 30102337. The reversal of 30102331 is 13320103.

It is a cyclic number.

It is not a de Polignac number, because 30102331 - 21 = 30102329 is a prime.

It is a super-2 number, since 2×301023312 = 1812300663267122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30102337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7915 + ... + 11083.

It is an arithmetic number, because the mean of its divisors is an integer number (2282400).

Almost surely, 230102331 is an apocalyptic number.

30102331 is a deficient number, since it is larger than the sum of its proper divisors (6416069).

30102331 is a wasteful number, since it uses less digits than its factorization.

30102331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30102331 is about 5486.5591220728. The cubic root of 30102331 is about 311.0761454421.

Adding to 30102331 its reverse (13320103), we get a palindrome (43422434).

The spelling of 30102331 in words is "thirty million, one hundred two thousand, three hundred thirty-one".

Divisors: 1 7 23 59 161 413 1357 3169 9499 22183 72887 186971 510209 1308797 4300333 30102331