31504673672 has 16 divisors (see below), whose sum is σ = 59075339100. Its totient is φ = 15751249920.

The previous prime is 31504673663. The next prime is 31504673677. The reversal of 31504673672 is 27637640513.

It can be written as a sum of positive squares in 2 ways, for example, as 29380016836 + 2124656836 = 171406^2 + 46094^2 .

It is not an unprimeable number, because it can be changed into a prime (31504673677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5297 + ... + 251072.

Almost surely, 2^31504673672 is an apocalyptic number.

It is an amenable number.

31504673672 is a deficient number, since it is larger than the sum of its proper divisors (27570665428).

31504673672 is a wasteful number, since it uses less digits than its factorization.

31504673672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271736 (or 271732 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 31504673672 in words is "thirty-one billion, five hundred four million, six hundred seventy-three thousand, six hundred seventy-two".