23204431 has 2 divisors, whose sum is σ = 23204432. Its totient is φ = 23204430.

The previous prime is 23204429. The next prime is 23204497. The reversal of 23204431 is 13440232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23204431 - 2¹ = 23204429 is a prime.

It is a super-2 number, since 2×23204431² = 1076891236067522, which contains 22 as substring.

Together with 23204429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23204399 and 23204408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23204411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11602215 + 11602216.

It is an arithmetic number, because the mean of its divisors is an integer number (11602216).

Almost surely, 2^23204431 is an apocalyptic number.

23204431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23204431 is an equidigital number, since it uses as much as digits as its factorization.

23204431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 23204431 is about 4817.0977777081. The cubic root of 23204431 is about 285.2267857358.

Adding to 23204431 its reverse (13440232), we get a palindrome (36644663).

The spelling of 23204431 in words is "twenty-three million, two hundred four thousand, four hundred thirty-one".