317279023931 has 4 divisors (see below), whose sum is σ = 317358327864. Its totient is φ = 317199720000.

The previous prime is 317279023921. The next prime is 317279023951. The reversal of 317279023931 is 139320972713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139320972713 = 13 ⋅10716997901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317279023931 is a prime.

It is a super-2 number, since 2×317279023931² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317279023921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39645965 + ... + 39653966.

It is an arithmetic number, because the mean of its divisors is an integer number (79339581966).

Almost surely, 2^317279023931 is an apocalyptic number.

317279023931 is a deficient number, since it is larger than the sum of its proper divisors (79303933).

317279023931 is an equidigital number, since it uses as much as digits as its factorization.

317279023931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79303932.

The product of its (nonzero) digits is 428652, while the sum is 47.

The spelling of 317279023931 in words is "three hundred seventeen billion, two hundred seventy-nine million, twenty-three thousand, nine hundred thirty-one".