31894268320 has 48 divisors (see below), whose sum is σ = 75849274368. Its totient is φ = 12673209600.

The previous prime is 31894268309. The next prime is 31894268347. The reversal of 31894268320 is 2386249813.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635904 + ... + 684223.

It is an arithmetic number, because the mean of its divisors is an integer number (1580193216).

Almost surely, 2^31894268320 is an apocalyptic number.

It is an amenable number.

31894268320 is an abundant number, since it is smaller than the sum of its proper divisors (43955006048).

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

31894268320 is a wasteful number, since it uses less digits than its factorization.

31894268320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320293 (or 1320285 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 31894268320 in words is "thirty-one billion, eight hundred ninety-four million, two hundred sixty-eight thousand, three hundred twenty".