31153256456 has 48 divisors (see below), whose sum is σ = 68042394540. Its totient is φ = 13333057920.

The previous prime is 31153256447. The next prime is 31153256461. The reversal of 31153256456 is 65465235113.

It can be written as a sum of positive squares in 2 ways, for example, as 27129384100 + 4023872356 = 164710^2 + 63434^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233126 + ... + 341546.

Almost surely, 2^31153256456 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 31153256456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34021197270).

31153256456 is an abundant number, since it is smaller than the sum of its proper divisors (36889138084).

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

31153256456 is a wasteful number, since it uses less digits than its factorization.

31153256456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109174 (or 109163 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The spelling of 31153256456 in words is "thirty-one billion, one hundred fifty-three million, two hundred fifty-six thousand, four hundred fifty-six".