31955316911232 has 384 divisors, whose sum is σ = 100915357704000. Its totient is φ = 8899478691840.

The previous prime is 31955316911209. The next prime is 31955316911233. The reversal of 31955316911232 is 23211961355913.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×31955316911232² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31955316911233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138207819 + ... + 138438837.

Almost surely, 2^{31955316911232} is an apocalyptic number.

31955316911232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31955316911232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50457678852000).

31955316911232 is an abundant number, since it is smaller than the sum of its proper divisors (68960040792768).

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

31955316911232 is a wasteful number, since it uses less digits than its factorization.

31955316911232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231300 (or 231277 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 51.

The spelling of 31955316911232 in words is "thirty-one trillion, nine hundred fifty-five billion, three hundred sixteen million, nine hundred eleven thousand, two hundred thirty-two".