31320456452256 has 48 divisors (see below), whose sum is σ = 84128202807264. Its totient is φ = 10197357913344.

The previous prime is 31320456452251. The next prime is 31320456452267. The reversal of 31320456452256 is 65225465402313.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (31320456452251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3793655811 + ... + 3793664066.

It is an arithmetic number, because the mean of its divisors is an integer number (1752670891818).

Almost surely, 2^{31320456452256} is an apocalyptic number.

It is an amenable number.

31320456452256 is an abundant number, since it is smaller than the sum of its proper divisors (52807746355008).

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

31320456452256 is a wasteful number, since it uses less digits than its factorization.

31320456452256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7587319933 (or 7587319925 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 31320456452256 in words is "thirty-one trillion, three hundred twenty billion, four hundred fifty-six million, four hundred fifty-two thousand, two hundred fifty-six".