12311715211 has 2 divisors, whose sum is σ = 12311715212. Its totient is φ = 12311715210.

The previous prime is 12311715191. The next prime is 12311715233. The reversal of 12311715211 is 11251711321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12311715211 - 2¹⁷ = 12311584139 is a prime.

It is not a weakly prime, because it can be changed into another prime (12311712211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155857605 + 6155857606.

It is an arithmetic number, because the mean of its divisors is an integer number (6155857606).

Almost surely, 2^12311715211 is an apocalyptic number.

12311715211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311715211 is an equidigital number, since it uses as much as digits as its factorization.

12311715211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 25.

The spelling of 12311715211 in words is "twelve billion, three hundred eleven million, seven hundred fifteen thousand, two hundred eleven".