31830316956 has 30 divisors (see below), whose sum is σ = 83210736840. Its totient is φ = 10610105544.

The previous prime is 31830316897. The next prime is 31830316967. The reversal of 31830316956 is 65961303813.

It is a super-2 number, since 2×31830316956² (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 9 ways as a sum of consecutive naturals, for example, 49120536 + ... + 49121183.

It is an arithmetic number, because the mean of its divisors is an integer number (2773691228).

Almost surely, 2^31830316956 is an apocalyptic number.

31830316956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31830316956 is an abundant number, since it is smaller than the sum of its proper divisors (51380419884).

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

31830316956 is a wasteful number, since it uses less digits than its factorization.

31830316956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98241735 (or 98241724 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 31830316956 in words is "thirty-one billion, eight hundred thirty million, three hundred sixteen thousand, nine hundred fifty-six".