12311715191 has 2 divisors, whose sum is σ = 12311715192. Its totient is φ = 12311715190.

The previous prime is 12311715167. The next prime is 12311715211. The reversal of 12311715191 is 19151711321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12311715191 - 2⁶ = 12311715127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311715121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155857595 + 6155857596.

It is an arithmetic number, because the mean of its divisors is an integer number (6155857596).

Almost surely, 2^12311715191 is an apocalyptic number.

12311715191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311715191 is an equidigital number, since it uses as much as digits as its factorization.

12311715191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 32.

The spelling of 12311715191 in words is "twelve billion, three hundred eleven million, seven hundred fifteen thousand, one hundred ninety-one".