12312133311031 has 4 divisors (see below), whose sum is σ = 13036376446992. Its totient is φ = 11587890175072.

The previous prime is 12312133310999. The next prime is 12312133311043. The reversal of 12312133311031 is 13011333121321.

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 12312133311031 - 2⁵ = 12312133310999 is a prime.

It is a super-2 number, since 2×12312133311031² (a number of 27 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 = 12312133310987 and 12312133311005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312133311131) 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, 362121567955 + ... + 362121567988.

It is an arithmetic number, because the mean of its divisors is an integer number (3259094111748).

Almost surely, 2^{12312133311031} is an apocalyptic number.

12312133311031 is a deficient number, since it is larger than the sum of its proper divisors (724243135961).

12312133311031 is an equidigital number, since it uses as much as digits as its factorization.

12312133311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724243135960.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 12312133311031 its reverse (13011333121321), we get a palindrome (25323466432352).

The spelling of 12312133311031 in words is "twelve trillion, three hundred twelve billion, one hundred thirty-three million, three hundred eleven thousand, thirty-one".