313687131 has 16 divisors (see below), whose sum is σ = 442583040. Its totient is φ = 197074080.

The previous prime is 313687097. The next prime is 313687151. The reversal of 313687131 is 131786313.

It is not a de Polignac number, because 313687131 - 2⁹ = 313686619 is a prime.

It is a super-2 number, since 2×313687131² = 196799232310022322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313687092 and 313687101.

It is not an unprimeable number, because it can be changed into a prime (313687151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3520 + ... + 25293.

It is an arithmetic number, because the mean of its divisors is an integer number (27661440).

Almost surely, 2^313687131 is an apocalyptic number.

313687131 is a deficient number, since it is larger than the sum of its proper divisors (128895909).

313687131 is a wasteful number, since it uses less digits than its factorization.

313687131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29026.

The product of its digits is 9072, while the sum is 33.

The square root of 313687131 is about 17711.2148369331. The cubic root of 313687131 is about 679.4626168127.

The spelling of 313687131 in words is "three hundred thirteen million, six hundred eighty-seven thousand, one hundred thirty-one".