312113321131 has 16 divisors (see below), whose sum is σ = 331855822656. Its totient is φ = 292927574016.

The previous prime is 312113321089. The next prime is 312113321141. The reversal of 312113321131 is 131123311213.

It is a cyclic number.

It is not a de Polignac number, because 312113321131 - 2⁹ = 312113320619 is a prime.

It is a super-2 number, since 2×312113321131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312113321141) 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, 157540 + ... + 805633.

It is an arithmetic number, because the mean of its divisors is an integer number (20740988916).

Almost surely, 2^312113321131 is an apocalyptic number.

312113321131 is a deficient number, since it is larger than the sum of its proper divisors (19742501525).

312113321131 is a wasteful number, since it uses less digits than its factorization.

312113321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963462.

The product of its digits is 324, while the sum is 22.

Adding to 312113321131 its reverse (131123311213), we get a palindrome (443236632344).

The spelling of 312113321131 in words is "three hundred twelve billion, one hundred thirteen million, three hundred twenty-one thousand, one hundred thirty-one".