31234861056 has 432 divisors, whose sum is σ = 103188103200. Its totient is φ = 8375894016.

The previous prime is 31234861027. The next prime is 31234861067. The reversal of 31234861056 is 65016843213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 87005005 + ... + 87005363.

It is an arithmetic number, because the mean of its divisors is an integer number (238861350).

Almost surely, 2^31234861056 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 31234861056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51594051600).

31234861056 is an abundant number, since it is smaller than the sum of its proper divisors (71953242144).

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

31234861056 is a wasteful number, since it uses less digits than its factorization.

31234861056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 31234861056 in words is "thirty-one billion, two hundred thirty-four million, eight hundred sixty-one thousand, fifty-six".