31115536056 has 96 divisors (see below), whose sum is σ = 92634347520. Its totient is φ = 9356942400.

The previous prime is 31115536043. The next prime is 31115536061. The reversal of 31115536056 is 65063551113.

31115536056 is a `hidden beast` number, since 3 + 1 + 115 + 536 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 31115536056.

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 23 ways as a sum of consecutive naturals, for example, 46200 + ... + 253703.

It is an arithmetic number, because the mean of its divisors is an integer number (964941120).

Almost surely, 2^31115536056 is an apocalyptic number.

31115536056 is a gapful number since it is divisible by the number (36) 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 31115536056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46317173760).

31115536056 is an abundant number, since it is smaller than the sum of its proper divisors (61518811464).

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

31115536056 is a wasteful number, since it uses less digits than its factorization.

31115536056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300057 (or 300050 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 31115536056 in words is "thirty-one billion, one hundred fifteen million, five hundred thirty-six thousand, fifty-six".