317107995021 has 12 divisors (see below), whose sum is σ = 473839533180. Its totient is φ = 204115490880.

The previous prime is 317107995011. The next prime is 317107995067. The reversal of 317107995021 is 120599701713.

It is a happy number.

317107995021 is a `hidden beast` number, since 3 + 1 + 71 + 0 + 79 + 9 + 502 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 135343052100 + 181764942921 = 367890^2 + 426339^2 .

It is not a de Polignac number, because 317107995021 - 2¹³ = 317107986829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317107995011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607486320 + ... + 607486841.

It is an arithmetic number, because the mean of its divisors is an integer number (39486627765).

Almost surely, 2^317107995021 is an apocalyptic number.

It is an amenable number.

317107995021 is a deficient number, since it is larger than the sum of its proper divisors (156731538159).

317107995021 is a wasteful number, since it uses less digits than its factorization.

317107995021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214973196 (or 1214973193 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 45.

The spelling of 317107995021 in words is "three hundred seventeen billion, one hundred seven million, nine hundred ninety-five thousand, twenty-one".