12311329969 has 2 divisors, whose sum is σ = 12311329970. Its totient is φ = 12311329968.

The previous prime is 12311329967. The next prime is 12311330023. The reversal of 12311329969 is 96992311321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7346718369 + 4964611600 = 85713^2 + 70460^2 .

It is a cyclic number.

It is not a de Polignac number, because 12311329969 - 2¹ = 12311329967 is a prime.

It is a super-2 number, since 2×12311329969² (a number of 21 digits) contains 22 as substring.

Together with 12311329967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12311329967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155664984 + 6155664985.

It is an arithmetic number, because the mean of its divisors is an integer number (6155664985).

Almost surely, 2^12311329969 is an apocalyptic number.

It is an amenable number.

12311329969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311329969 is an equidigital number, since it uses as much as digits as its factorization.

12311329969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 46.

The spelling of 12311329969 in words is "twelve billion, three hundred eleven million, three hundred twenty-nine thousand, nine hundred sixty-nine".