12331313131691 has 2 divisors, whose sum is σ = 12331313131692. Its totient is φ = 12331313131690.

The previous prime is 12331313131681. The next prime is 12331313131727. The reversal of 12331313131691 is 19613131313321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12331313131691 is a prime.

It is a super-2 number, since 2×12331313131691² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12331313131601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6165656565845 + 6165656565846.

It is an arithmetic number, because the mean of its divisors is an integer number (6165656565846).

Almost surely, 2^{12331313131691} is an apocalyptic number.

12331313131691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12331313131691 is an equidigital number, since it uses as much as digits as its factorization.

12331313131691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 38.

The spelling of 12331313131691 in words is "twelve trillion, three hundred thirty-one billion, three hundred thirteen million, one hundred thirty-one thousand, six hundred ninety-one".