23423231 has 6 divisors (see below), whose sum is σ = 25363800. Its totient is φ = 21621288.

The previous prime is 23423227. The next prime is 23423243. The reversal of 23423231 is 13232432.

It is not a de Polignac number, because 23423231 - 2² = 23423227 is a prime.

It is a super-2 number, since 2×23423231² = 1097295500958722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69131 + ... + 69468.

It is an arithmetic number, because the mean of its divisors is an integer number (4227300).

Almost surely, 2^23423231 is an apocalyptic number.

23423231 is a deficient number, since it is larger than the sum of its proper divisors (1940569).

23423231 is a wasteful number, since it uses less digits than its factorization.

23423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138625 (or 138612 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 23423231 is about 4839.7552624074. The cubic root of 23423231 is about 286.1204726618.

Adding to 23423231 its reverse (13232432), we get a palindrome (36655663).

The spelling of 23423231 in words is "twenty-three million, four hundred twenty-three thousand, two hundred thirty-one".