12031312310113 has 4 divisors (see below), whose sum is σ = 12031319323540. Its totient is φ = 12031305296688.

The previous prime is 12031312310099. The next prime is 12031312310117. The reversal of 12031312310113 is 31101321313021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10291084352784 + 1740227957329 = 3207972^2 + 1319177^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031312310113 - 2⁵ = 12031312310081 is a prime.

It is a super-2 number, since 2×12031312310113² (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 (12031312310117) 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, 980131 + ... + 5002327.

It is an arithmetic number, because the mean of its divisors is an integer number (3007829830885).

Almost surely, 2^{12031312310113} is an apocalyptic number.

It is an amenable number.

12031312310113 is a deficient number, since it is larger than the sum of its proper divisors (7013427).

12031312310113 is an equidigital number, since it uses as much as digits as its factorization.

12031312310113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013426.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 12031312310113 its reverse (31101321313021), we get a palindrome (43132633623134).

The spelling of 12031312310113 in words is "twelve trillion, thirty-one billion, three hundred twelve million, three hundred ten thousand, one hundred thirteen".