312320213031131 has 16 divisors (see below), whose sum is σ = 321450137215200. Its totient is φ = 303264830668800.

The previous prime is 312320213031107. The next prime is 312320213031149. The reversal of 312320213031131 is 131130312023213.

It is a cyclic number.

It is not a de Polignac number, because 312320213031131 - 2¹⁸ = 312320212768987 is a prime.

It is a super-2 number, since 2×312320213031131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312320213031131.

It is not an unprimeable number, because it can be changed into a prime (312320213001131) 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, 5882726 + ... + 25675803.

It is an arithmetic number, because the mean of its divisors is an integer number (20090633575950).

Almost surely, 2^{312320213031131} is an apocalyptic number.

312320213031131 is a deficient number, since it is larger than the sum of its proper divisors (9129924184069).

312320213031131 is a wasteful number, since it uses less digits than its factorization.

312320213031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31559710.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 312320213031131 its reverse (131130312023213), we get a palindrome (443450525054344).

The spelling of 312320213031131 in words is "three hundred twelve trillion, three hundred twenty billion, two hundred thirteen million, thirty-one thousand, one hundred thirty-one".