31530610056 has 128 divisors (see below), whose sum is σ = 91262246400. Its totient is φ = 8971822080.

The previous prime is 31530610051. The next prime is 31530610057. The reversal of 31530610056 is 65001603513.

It is not an unprimeable number, because it can be changed into a prime (31530610051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1980255 + ... + 1996113.

It is an arithmetic number, because the mean of its divisors is an integer number (712986300).

Almost surely, 2^31530610056 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 31530610056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45631123200).

31530610056 is an abundant number, since it is smaller than the sum of its proper divisors (59731636344).

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

31530610056 is a wasteful number, since it uses less digits than its factorization.

31530610056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16339 (or 16335 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The spelling of 31530610056 in words is "thirty-one billion, five hundred thirty million, six hundred ten thousand, fifty-six".