31656152256 has 112 divisors (see below), whose sum is σ = 84827059200. Its totient is φ = 10417600512.

The previous prime is 31656152221. The next prime is 31656152257. The reversal of 31656152256 is 65225165613.

It is a super-2 number, since 2×31656152256² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31656152257) 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, 17753541 + ... + 17755323.

Almost surely, 2^31656152256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31656152256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42413529600).

31656152256 is an abundant number, since it is smaller than the sum of its proper divisors (53170906944).

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

31656152256 is a wasteful number, since it uses less digits than its factorization.

31656152256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926 (or 2916 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 31656152256 in words is "thirty-one billion, six hundred fifty-six million, one hundred fifty-two thousand, two hundred fifty-six".