313123312131 has 16 divisors (see below), whose sum is σ = 479997417984. Its totient is φ = 177856182144.

The previous prime is 313123312087. The next prime is 313123312147. The reversal of 313123312131 is 131213321313.

It is not a de Polignac number, because 313123312131 - 2⁶ = 313123312067 is a prime.

It is a super-2 number, since 2×313123312131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313123312181) 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, 44639110 + ... + 44646123.

It is an arithmetic number, because the mean of its divisors is an integer number (29999838624).

Almost surely, 2^313123312131 is an apocalyptic number.

313123312131 is a deficient number, since it is larger than the sum of its proper divisors (166874105853).

313123312131 is a wasteful number, since it uses less digits than its factorization.

313123312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89285410.

The product of its digits is 972, while the sum is 24.

Adding to 313123312131 its reverse (131213321313), we get a palindrome (444336633444).

The spelling of 313123312131 in words is "three hundred thirteen billion, one hundred twenty-three million, three hundred twelve thousand, one hundred thirty-one".