31697349326313 has 32 divisors (see below), whose sum is σ = 46125293322240. Its totient is φ = 19202159266560.

The previous prime is 31697349326261. The next prime is 31697349326323. The reversal of 31697349326313 is 31362394379613.

It is not a de Polignac number, because 31697349326313 - 2²⁸ = 31697080890857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31697349326323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 789905656 + ... + 789945782.

It is an arithmetic number, because the mean of its divisors is an integer number (1441415416320).

Almost surely, 2^{31697349326313} is an apocalyptic number.

31697349326313 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31697349326313 is a deficient number, since it is larger than the sum of its proper divisors (14427943995927).

31697349326313 is a wasteful number, since it uses less digits than its factorization.

31697349326313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49957.

The product of its digits is 39680928, while the sum is 60.

The spelling of 31697349326313 in words is "thirty-one trillion, six hundred ninety-seven billion, three hundred forty-nine million, three hundred twenty-six thousand, three hundred thirteen".