12313131233111 has 4 divisors (see below), whose sum is σ = 12318501113832. Its totient is φ = 12307761352392.

The previous prime is 12313131233107. The next prime is 12313131233141. The reversal of 12313131233111 is 11133213131321.

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 12313131233111 - 2² = 12313131233107 is a prime.

It is a super-2 number, since 2×12313131233111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313131233141) 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, 2684936921 + ... + 2684941506.

It is an arithmetic number, because the mean of its divisors is an integer number (3079625278458).

Almost surely, 2^{12313131233111} is an apocalyptic number.

12313131233111 is a deficient number, since it is larger than the sum of its proper divisors (5369880721).

12313131233111 is an equidigital number, since it uses as much as digits as its factorization.

12313131233111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369880720.

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

Adding to 12313131233111 its reverse (11133213131321), we get a palindrome (23446344364432).

The spelling of 12313131233111 in words is "twelve trillion, three hundred thirteen billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred eleven".