23289231 has 16 divisors (see below), whose sum is σ = 37356800. Its totient is φ = 12607488.

The previous prime is 23289229. The next prime is 23289239. The reversal of 23289231 is 13298232.

It is a happy number.

It is not a de Polignac number, because 23289231 - 2¹ = 23289229 is a prime.

It is a super-2 number, since 2×23289231² = 1084776561142722, 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 (23289239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28786 + ... + 29583.

It is an arithmetic number, because the mean of its divisors is an integer number (2334800).

Almost surely, 2^23289231 is an apocalyptic number.

23289231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23289231 is a deficient number, since it is larger than the sum of its proper divisors (14067569).

23289231 is a wasteful number, since it uses less digits than its factorization.

23289231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58398.

The product of its digits is 5184, while the sum is 30.

The square root of 23289231 is about 4825.8917310690. The cubic root of 23289231 is about 285.5738146751.

Subtracting from 23289231 its reverse (13298232), we obtain a palindrome (9990999).

The spelling of 23289231 in words is "twenty-three million, two hundred eighty-nine thousand, two hundred thirty-one".