31374644647372 has 48 divisors (see below), whose sum is σ = 59165191653120. Its totient is φ = 14471777544768.

The previous prime is 31374644647363. The next prime is 31374644647429. The reversal of 31374644647372 is 27374644647313.

It is a self number, because there is not a number n which added to its sum of digits gives 31374644647372.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1455011463 + ... + 1455033025.

It is an arithmetic number, because the mean of its divisors is an integer number (1232608159440).

Almost surely, 2^{31374644647372} is an apocalyptic number.

It is an amenable number.

31374644647372 is a deficient number, since it is larger than the sum of its proper divisors (27790547005748).

31374644647372 is a wasteful number, since it uses less digits than its factorization.

31374644647372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37342 (or 37340 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 61.

The spelling of 31374644647372 in words is "thirty-one trillion, three hundred seventy-four billion, six hundred forty-four million, six hundred forty-seven thousand, three hundred seventy-two".