23323029991 has 2 divisors, whose sum is σ = 23323029992. Its totient is φ = 23323029990.

The previous prime is 23323029979. The next prime is 23323030057. The reversal of 23323029991 is 19992032332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23323029991 - 2²⁷ = 23188812263 is a prime.

It is a super-2 number, since 2×23323029991² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23323029931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11661514995 + 11661514996.

It is an arithmetic number, because the mean of its divisors is an integer number (11661514996).

Almost surely, 2^23323029991 is an apocalyptic number.

23323029991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23323029991 is an equidigital number, since it uses as much as digits as its factorization.

23323029991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 43.

The spelling of 23323029991 in words is "twenty-three billion, three hundred twenty-three million, twenty-nine thousand, nine hundred ninety-one".