12311113291 has 2 divisors, whose sum is σ = 12311113292. Its totient is φ = 12311113290.

The previous prime is 12311113279. The next prime is 12311113313. The reversal of 12311113291 is 19231111321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12311113291 - 2⁷ = 12311113163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12311113211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155556645 + 6155556646.

It is an arithmetic number, because the mean of its divisors is an integer number (6155556646).

Almost surely, 2^12311113291 is an apocalyptic number.

12311113291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311113291 is an equidigital number, since it uses as much as digits as its factorization.

12311113291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 25.

The spelling of 12311113291 in words is "twelve billion, three hundred eleven million, one hundred thirteen thousand, two hundred ninety-one".