31038996072 has 64 divisors (see below), whose sum is σ = 88710468480. Its totient is φ = 8865522432.

The previous prime is 31038996067. The next prime is 31038996073. The reversal of 31038996072 is 27069983013.

It is not an unprimeable number, because it can be changed into a prime (31038996073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546318 + ... + 600450.

It is an arithmetic number, because the mean of its divisors is an integer number (1386101070).

Almost surely, 2^31038996072 is an apocalyptic number.

It is an amenable number.

31038996072 is an abundant number, since it is smaller than the sum of its proper divisors (57671472408).

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

31038996072 is a wasteful number, since it uses less digits than its factorization.

31038996072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57562 (or 57558 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 31038996072 in words is "thirty-one billion, thirty-eight million, nine hundred ninety-six thousand, seventy-two".