31379472392 has 16 divisors (see below), whose sum is σ = 58839547500. Its totient is φ = 15688926400.

The previous prime is 31379472391. The next prime is 31379472433. The reversal of 31379472392 is 29327497313.

It can be written as a sum of positive squares in 2 ways, for example, as 31227837796 + 151634596 = 176714^2 + 12314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31379472392.

It is not an unprimeable number, because it can be changed into a prime (31379472391) 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, 83234 + ... + 263982.

Almost surely, 2^31379472392 is an apocalyptic number.

It is an amenable number.

31379472392 is a deficient number, since it is larger than the sum of its proper divisors (27460075108).

31379472392 is a wasteful number, since it uses less digits than its factorization.

31379472392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202456 (or 202452 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 50.

The spelling of 31379472392 in words is "thirty-one billion, three hundred seventy-nine million, four hundred seventy-two thousand, three hundred ninety-two".