31172338467 has 24 divisors (see below), whose sum is σ = 49030909200. Its totient is φ = 19008900288.

The previous prime is 31172338459. The next prime is 31172338493. The reversal of 31172338467 is 76483327113.

It is not a de Polignac number, because 31172338467 - 2³ = 31172338459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31172338447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3138048 + ... + 3147965.

It is an arithmetic number, because the mean of its divisors is an integer number (2042954550).

Almost surely, 2^31172338467 is an apocalyptic number.

31172338467 is a deficient number, since it is larger than the sum of its proper divisors (17858570733).

31172338467 is a wasteful number, since it uses less digits than its factorization.

31172338467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286067 (or 6286064 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 31172338467 in words is "thirty-one billion, one hundred seventy-two million, three hundred thirty-eight thousand, four hundred sixty-seven".