12312311012131 has 4 divisors (see below), whose sum is σ = 13259411859232. Its totient is φ = 11365210165032.

The previous prime is 12312311012077. The next prime is 12312311012179. The reversal of 12312311012131 is 13121011321321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12312311012131 - 2¹⁵ = 12312310979363 is a prime.

It is a super-2 number, since 2×12312311012131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312311012731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473550423531 + ... + 473550423556.

It is an arithmetic number, because the mean of its divisors is an integer number (3314852964808).

Almost surely, 2^{12312311012131} is an apocalyptic number.

12312311012131 is a deficient number, since it is larger than the sum of its proper divisors (947100847101).

12312311012131 is an equidigital number, since it uses as much as digits as its factorization.

12312311012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947100847100.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12312311012131 its reverse (13121011321321), we get a palindrome (25433322333452).

The spelling of 12312311012131 in words is "twelve trillion, three hundred twelve billion, three hundred eleven million, twelve thousand, one hundred thirty-one".