31345256456 has 32 divisors (see below), whose sum is σ = 58912199640. Its totient is φ = 15635386368.

The previous prime is 31345256429. The next prime is 31345256507. The reversal of 31345256456 is 65465254313.

It can be written as a sum of positive squares in 4 ways, for example, as 19975299556 + 11369956900 = 141334^2 + 106630^2 .

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 7 ways as a sum of consecutive naturals, for example, 7368026 + ... + 7372278.

Almost surely, 2^31345256456 is an apocalyptic number.

It is an amenable number.

31345256456 is a deficient number, since it is larger than the sum of its proper divisors (27566943184).

31345256456 is a wasteful number, since it uses less digits than its factorization.

31345256456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233 (or 6229 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 44.

The spelling of 31345256456 in words is "thirty-one billion, three hundred forty-five million, two hundred fifty-six thousand, four hundred fifty-six".