31860618056 has 16 divisors (see below), whose sum is σ = 59929521900. Its totient is φ = 15879412224.

The previous prime is 31860618047. The next prime is 31860618059. The reversal of 31860618056 is 65081606813.

It can be written as a sum of positive squares in 2 ways, for example, as 31822992100 + 37625956 = 178390^2 + 6134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31860617998 and 31860618016.

It is not an unprimeable number, because it can be changed into a prime (31860618059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6359441 + ... + 6364448.

Almost surely, 2^31860618056 is an apocalyptic number.

It is an amenable number.

31860618056 is a deficient number, since it is larger than the sum of its proper divisors (28068903844).

31860618056 is a wasteful number, since it uses less digits than its factorization.

31860618056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12724208 (or 12724204 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 31860618056 in words is "thirty-one billion, eight hundred sixty million, six hundred eighteen thousand, fifty-six".