23312231 has 8 divisors (see below), whose sum is σ = 23947728. Its totient is φ = 22680000.

The previous prime is 23312227. The next prime is 23312243. The reversal of 23312231 is 13221332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23312231 - 2² = 23312227 is a prime.

It is a super-2 number, since 2×23312231² = 1086920228394722, 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 (23312251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21656 + ... + 22706.

It is an arithmetic number, because the mean of its divisors is an integer number (2993466).

Almost surely, 2^23312231 is an apocalyptic number.

23312231 is a deficient number, since it is larger than the sum of its proper divisors (635497).

23312231 is a wasteful number, since it uses less digits than its factorization.

23312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633.

The product of its digits is 216, while the sum is 17.

The square root of 23312231 is about 4828.2741222926. The cubic root of 23312231 is about 285.6677928277.

Adding to 23312231 its reverse (13221332), we get a palindrome (36533563).

The spelling of 23312231 in words is "twenty-three million, three hundred twelve thousand, two hundred thirty-one".