312023121320131 has 24 divisors (see below), whose sum is σ = 340913165557536. Its totient is φ = 285439532451840.

The previous prime is 312023121320111. The next prime is 312023121320167. The reversal of 312023121320131 is 131023121320213.

It is not a de Polignac number, because 312023121320131 - 2²⁵ = 312023087765699 is a prime.

It is a super-2 number, since 2×312023121320131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312023121320096 and 312023121320105.

It is not an unprimeable number, because it can be changed into a prime (312023121320111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9608560 + ... + 26765101.

It is an arithmetic number, because the mean of its divisors is an integer number (14204715231564).

Almost surely, 2^{312023121320131} is an apocalyptic number.

312023121320131 is a deficient number, since it is larger than the sum of its proper divisors (28890044237405).

312023121320131 is a wasteful number, since it uses less digits than its factorization.

312023121320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36374143 (or 36374130 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 312023121320131 its reverse (131023121320213), we get a palindrome (443046242640344).

The spelling of 312023121320131 in words is "three hundred twelve trillion, twenty-three billion, one hundred twenty-one million, three hundred twenty thousand, one hundred thirty-one".