313261261971 has 24 divisors (see below), whose sum is σ = 488392139664. Its totient is φ = 178078924800.

The previous prime is 313261261967. The next prime is 313261261993. The reversal of 313261261971 is 179162162313.

It is not a de Polignac number, because 313261261971 - 2² = 313261261967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313261261921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5492430 + ... + 5549171.

It is an arithmetic number, because the mean of its divisors is an integer number (20349672486).

Almost surely, 2^313261261971 is an apocalyptic number.

313261261971 is a deficient number, since it is larger than the sum of its proper divisors (175130877693).

313261261971 is a wasteful number, since it uses less digits than its factorization.

313261261971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11041811 (or 11041804 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The spelling of 313261261971 in words is "three hundred thirteen billion, two hundred sixty-one million, two hundred sixty-one thousand, nine hundred seventy-one".