12313131333121 has 4 divisors (see below), whose sum is σ = 12313145358000. Its totient is φ = 12313117308244.

The previous prime is 12313131333103. The next prime is 12313131333149. The reversal of 12313131333121 is 12133313131321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12313131333121 - 2⁷ = 12313131332993 is a prime.

It is a super-2 number, since 2×12313131333121² (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 12313131333121.

It is not an unprimeable number, because it can be changed into a prime (12313131333161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600791 + ... + 7482988.

It is an arithmetic number, because the mean of its divisors is an integer number (3078286339500).

Almost surely, 2^{12313131333121} is an apocalyptic number.

It is an amenable number.

12313131333121 is a deficient number, since it is larger than the sum of its proper divisors (14024879).

12313131333121 is an equidigital number, since it uses as much as digits as its factorization.

12313131333121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14024878.

The product of its digits is 2916, while the sum is 28.

Adding to 12313131333121 its reverse (12133313131321), we get a palindrome (24446444464442).

The spelling of 12313131333121 in words is "twelve trillion, three hundred thirteen billion, one hundred thirty-one million, three hundred thirty-three thousand, one hundred twenty-one".