31015442056 has 32 divisors (see below), whose sum is σ = 62024262840. Its totient is φ = 14488956928.

The previous prime is 31015442041. The next prime is 31015442069. The reversal of 31015442056 is 65024451013.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23070572100 + 7944869956 = 151890^2 + 89134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813685 + ... + 850948.

Almost surely, 2^31015442056 is an apocalyptic number.

It is an amenable number.

31015442056 is a deficient number, since it is larger than the sum of its proper divisors (31008820784).

31015442056 is a wasteful number, since it uses less digits than its factorization.

31015442056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664793 (or 1664789 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 31015442056 its reverse (65024451013), we get a palindrome (96039893069).

The spelling of 31015442056 in words is "thirty-one billion, fifteen million, four hundred forty-two thousand, fifty-six".