313131361731 has 16 divisors (see below), whose sum is σ = 419077238784. Its totient is φ = 207971110944.

The previous prime is 313131361691. The next prime is 313131361787. The reversal of 313131361731 is 137163131313.

It is not a de Polignac number, because 313131361731 - 2⁹ = 313131361219 is a prime.

It is a super-2 number, since 2×313131361731² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313131361692 and 313131361701.

It is not an unprimeable number, because it can be changed into a prime (313131361831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852300 + ... + 1163046.

It is an arithmetic number, because the mean of its divisors is an integer number (26192327424).

Almost surely, 2^313131361731 is an apocalyptic number.

313131361731 is a deficient number, since it is larger than the sum of its proper divisors (105945877053).

313131361731 is a wasteful number, since it uses less digits than its factorization.

313131361731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312010.

The product of its digits is 10206, while the sum is 33.

The spelling of 313131361731 in words is "three hundred thirteen billion, one hundred thirty-one million, three hundred sixty-one thousand, seven hundred thirty-one".