23964431 has 2 divisors, whose sum is σ = 23964432. Its totient is φ = 23964430.

The previous prime is 23964397. The next prime is 23964433. The reversal of 23964431 is 13446932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23964431 is a prime.

It is a super-2 number, since 2×23964431² = 1148587906307522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 23964433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23964433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11982215 + 11982216.

It is an arithmetic number, because the mean of its divisors is an integer number (11982216).

Almost surely, 2^23964431 is an apocalyptic number.

23964431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23964431 is an equidigital number, since it uses as much as digits as its factorization.

23964431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 23964431 is about 4895.3478936639. The cubic root of 23964431 is about 288.3073453435.

The spelling of 23964431 in words is "twenty-three million, nine hundred sixty-four thousand, four hundred thirty-one".