23223231 has 12 divisors (see below), whose sum is σ = 33605208. Its totient is φ = 15454224.

The previous prime is 23223227. The next prime is 23223251. The reversal of 23223231 is 13232232.

It is a happy number.

It is not a de Polignac number, because 23223231 - 2² = 23223227 is a prime.

It is a super-2 number, since 2×23223231² = 1078636916158722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23223251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3781 + ... + 7793.

It is an arithmetic number, because the mean of its divisors is an integer number (2800434).

Almost surely, 2^23223231 is an apocalyptic number.

23223231 is a deficient number, since it is larger than the sum of its proper divisors (10381977).

23223231 is a wasteful number, since it uses less digits than its factorization.

23223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4659 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 23223231 is about 4819.0487650573. The cubic root of 23223231 is about 285.3037942473.

Adding to 23223231 its reverse (13232232), we get a palindrome (36455463).

Subtracting from 23223231 its reverse (13232232), we obtain a palindrome (9990999).

The spelling of 23223231 in words is "twenty-three million, two hundred twenty-three thousand, two hundred thirty-one".