31317325979 has 8 divisors (see below), whose sum is σ = 32686470432. Its totient is φ = 29977005760.

The previous prime is 31317325961. The next prime is 31317326009. The reversal of 31317325979 is 97952371313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31317325979 - 2⁸ = 31317325723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31317325079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7203839 + ... + 7208184.

It is an arithmetic number, because the mean of its divisors is an integer number (4085808804).

Almost surely, 2^31317325979 is an apocalyptic number.

31317325979 is a deficient number, since it is larger than the sum of its proper divisors (1369144453).

31317325979 is a wasteful number, since it uses less digits than its factorization.

31317325979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14412117.

The product of its digits is 1071630, while the sum is 50.

The spelling of 31317325979 in words is "thirty-one billion, three hundred seventeen million, three hundred twenty-five thousand, nine hundred seventy-nine".