12312322131 has 32 divisors (see below), whose sum is σ = 18096637248. Its totient is φ = 7413534720.

The previous prime is 12312322129. The next prime is 12312322151. The reversal of 12312322131 is 13122321321.

It is not a de Polignac number, because 12312322131 - 2¹ = 12312322129 is a prime.

It is a super-2 number, since 2×12312322131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12312322098 and 12312322107.

It is not an unprimeable number, because it can be changed into a prime (12312322151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93061 + ... + 182441.

It is an arithmetic number, because the mean of its divisors is an integer number (565519914).

Almost surely, 2^12312322131 is an apocalyptic number.

12312322131 is a deficient number, since it is larger than the sum of its proper divisors (5784315117).

12312322131 is a wasteful number, since it uses less digits than its factorization.

12312322131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89511.

The product of its digits is 432, while the sum is 21.

Adding to 12312322131 its reverse (13122321321), we get a palindrome (25434643452).

The spelling of 12312322131 in words is "twelve billion, three hundred twelve million, three hundred twenty-two thousand, one hundred thirty-one".