31263541055656 has 128 divisors (see below), whose sum is σ = 74479333017600. Its totient is φ = 11968160624640.

The previous prime is 31263541055647. The next prime is 31263541055689. The reversal of 31263541055656 is 65655014536213.

It is a Harshad number since it is a multiple of its sum of digits (52).

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 31 ways as a sum of consecutive naturals, for example, 373526260 + ... + 373609948.

It is an arithmetic number, because the mean of its divisors is an integer number (581869789200).

Almost surely, 2^{31263541055656} 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 31263541055656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37239666508800).

31263541055656 is an abundant number, since it is smaller than the sum of its proper divisors (43215791961944).

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

31263541055656 is a wasteful number, since it uses less digits than its factorization.

31263541055656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100299 (or 100295 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 31263541055656 in words is "thirty-one trillion, two hundred sixty-three billion, five hundred forty-one million, fifty-five thousand, six hundred fifty-six".