317931389031 has 4 divisors (see below), whose sum is σ = 423908518712. Its totient is φ = 211954259352.

The previous prime is 317931388921. The next prime is 317931389053. The reversal of 317931389031 is 130983139713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130983139713 = 3 ⋅43661046571.

It is not a de Polignac number, because 317931389031 - 2⁹ = 317931388519 is a prime.

It is a super-2 number, since 2×317931389031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317931389081) 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, 52988564836 + ... + 52988564841.

It is an arithmetic number, because the mean of its divisors is an integer number (105977129678).

Almost surely, 2^317931389031 is an apocalyptic number.

317931389031 is a deficient number, since it is larger than the sum of its proper divisors (105977129681).

317931389031 is a wasteful number, since it uses less digits than its factorization.

317931389031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105977129680.

The product of its (nonzero) digits is 367416, while the sum is 48.

The spelling of 317931389031 in words is "three hundred seventeen billion, nine hundred thirty-one million, three hundred eighty-nine thousand, thirty-one".