12323131131131 has 4 divisors (see below), whose sum is σ = 12324744325200. Its totient is φ = 12321517937064.

The previous prime is 12323131131109. The next prime is 12323131131161. The reversal of 12323131131131 is 13113113132321.

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 12323131131131 - 2⁶ = 12323131131067 is a prime.

It is a super-2 number, since 2×12323131131131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12323131131131.

It is not an unprimeable number, because it can be changed into a prime (12323131131161) 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, 806585576 + ... + 806600853.

It is an arithmetic number, because the mean of its divisors is an integer number (3081186081300).

Almost surely, 2^{12323131131131} is an apocalyptic number.

12323131131131 is a deficient number, since it is larger than the sum of its proper divisors (1613194069).

12323131131131 is an equidigital number, since it uses as much as digits as its factorization.

12323131131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613194068.

The product of its digits is 972, while the sum is 26.

Adding to 12323131131131 its reverse (13113113132321), we get a palindrome (25436244263452).

The spelling of 12323131131131 in words is "twelve trillion, three hundred twenty-three billion, one hundred thirty-one million, one hundred thirty-one thousand, one hundred thirty-one".