31847672868 has 48 divisors (see below), whose sum is σ = 81736818240. Its totient is φ = 9650805120.

The previous prime is 31847672863. The next prime is 31847672933. The reversal of 31847672868 is 86827674813.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31847672863) 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, 981013 + ... + 1012956.

It is an arithmetic number, because the mean of its divisors is an integer number (1702850380).

Almost surely, 2^31847672868 is an apocalyptic number.

It is an amenable number.

31847672868 is an abundant number, since it is smaller than the sum of its proper divisors (49889145372).

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

31847672868 is a wasteful number, since it uses less digits than its factorization.

31847672868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994009 (or 1993985 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 60.

The spelling of 31847672868 in words is "thirty-one billion, eight hundred forty-seven million, six hundred seventy-two thousand, eight hundred sixty-eight".