23242431 has 4 divisors (see below), whose sum is σ = 30989912. Its totient is φ = 15494952.

The previous prime is 23242421. The next prime is 23242447. The reversal of 23242431 is 13424232.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23242431 - 2⁹ = 23241919 is a prime.

It is a super-2 number, since 2×23242431² = 1080421197579522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23242398 and 23242407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23242421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3873736 + ... + 3873741.

It is an arithmetic number, because the mean of its divisors is an integer number (7747478).

Almost surely, 2^23242431 is an apocalyptic number.

23242431 is a deficient number, since it is larger than the sum of its proper divisors (7747481).

23242431 is an equidigital number, since it uses as much as digits as its factorization.

23242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7747480.

The product of its digits is 1152, while the sum is 21.

The square root of 23242431 is about 4821.0404478701. The cubic root of 23242431 is about 285.3823983532.

Adding to 23242431 its reverse (13424232), we get a palindrome (36666663).

The spelling of 23242431 in words is "twenty-three million, two hundred forty-two thousand, four hundred thirty-one".