31994267372 has 6 divisors (see below), whose sum is σ = 55989967908. Its totient is φ = 15997133684.

The previous prime is 31994267353. The next prime is 31994267377. The reversal of 31994267372 is 27376249913.

It is not an unprimeable number, because it can be changed into a prime (31994267377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999283418 + ... + 3999283425.

It is an arithmetic number, because the mean of its divisors is an integer number (9331661318).

Almost surely, 2^31994267372 is an apocalyptic number.

It is an amenable number.

31994267372 is a deficient number, since it is larger than the sum of its proper divisors (23995700536).

31994267372 is a wasteful number, since it uses less digits than its factorization.

31994267372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7998566847 (or 7998566845 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 53.

The spelling of 31994267372 in words is "thirty-one billion, nine hundred ninety-four million, two hundred sixty-seven thousand, three hundred seventy-two".