31004231356 has 12 divisors (see below), whose sum is σ = 62008462768. Its totient is φ = 13287527712.

The previous prime is 31004231353. The next prime is 31004231387. The reversal of 31004231356 is 65313240013.

31004231356 is an admirable number.

It is a super-2 number, since 2×31004231356² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1107293977 = 31004231356 / (3 + 1 + 0 + 0 + 4 + 2 + 3 + 1 + 3 + 5 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004231353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553646961 + ... + 553647016.

Almost surely, 2^31004231356 is an apocalyptic number.

It is an amenable number.

31004231356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31004231356 is a wasteful number, since it uses less digits than its factorization.

31004231356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107293988 (or 1107293986 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 31004231356 its reverse (65313240013), we get a palindrome (96317471369).

The spelling of 31004231356 in words is "thirty-one billion, four million, two hundred thirty-one thousand, three hundred fifty-six".