312012313431131 has 8 divisors (see below), whose sum is σ = 315145555451760. Its totient is φ = 308883994024032.

The previous prime is 312012313431011. The next prime is 312012313431223. The reversal of 312012313431131 is 131134313210213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312012313431131 - 2¹⁸ = 312012313168987 is a prime.

It is a super-2 number, since 2×312012313431131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312012313431094 and 312012313431103.

It is not an unprimeable number, because it can be changed into a prime (312012313431331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230525980 + ... + 1230779513.

It is an arithmetic number, because the mean of its divisors is an integer number (39393194431470).

Almost surely, 2^{312012313431131} is an apocalyptic number.

312012313431131 is a deficient number, since it is larger than the sum of its proper divisors (3133242020629).

312012313431131 is a wasteful number, since it uses less digits than its factorization.

312012313431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461306765.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 312012313431131 its reverse (131134313210213), we get a palindrome (443146626641344).

The spelling of 312012313431131 in words is "three hundred twelve trillion, twelve billion, three hundred thirteen million, four hundred thirty-one thousand, one hundred thirty-one".