12311620511 has 2 divisors, whose sum is σ = 12311620512. Its totient is φ = 12311620510.

The previous prime is 12311620501. The next prime is 12311620547. The reversal of 12311620511 is 11502611321.

It is a weak prime.

It is an emirp because it is prime and its reverse (11502611321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12311620511 - 2¹⁴ = 12311604127 is a prime.

It is a super-2 number, since 2×12311620511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311620501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155810255 + 6155810256.

It is an arithmetic number, because the mean of its divisors is an integer number (6155810256).

Almost surely, 2^12311620511 is an apocalyptic number.

12311620511 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311620511 is an equidigital number, since it uses as much as digits as its factorization.

12311620511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 12311620511 in words is "twelve billion, three hundred eleven million, six hundred twenty thousand, five hundred eleven".