31572013004 has 18 divisors (see below), whose sum is σ = 64271598300. Its totient is φ = 13530862632.

The previous prime is 31572013001. The next prime is 31572013009. The reversal of 31572013004 is 40031027513.

It is not an unprimeable number, because it can be changed into a prime (31572013001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80540654 + ... + 80541045.

It is an arithmetic number, because the mean of its divisors is an integer number (3570644350).

Almost surely, 2^31572013004 is an apocalyptic number.

It is an amenable number.

31572013004 is an abundant number, since it is smaller than the sum of its proper divisors (32699585296).

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

31572013004 is a wasteful number, since it uses less digits than its factorization.

31572013004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161081717 (or 161081708 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The spelling of 31572013004 in words is "thirty-one billion, five hundred seventy-two million, thirteen thousand, four".