23163231 has 96 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 10644480.

The previous prime is 23163209. The next prime is 23163241. The reversal of 23163231 is 13236132.

It is not a de Polignac number, because 23163231 - 2⁹ = 23162719 is a prime.

It is a super-2 number, since 2×23163231² = 1073070540718722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 23163198 and 23163207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23163241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 747186 + ... + 747216.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

Almost surely, 2^23163231 is an apocalyptic number.

23163231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23163231 is a deficient number, since it is larger than the sum of its proper divisors (20962977).

23163231 is a wasteful number, since it uses less digits than its factorization.

23163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 94 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 23163231 is about 4812.8194439434. The cubic root of 23163231 is about 285.0578768269.

23163231 divided by its sum of digits (21) gives a palindrome (1103011).

Adding to 23163231 its reverse (13236132), we get a palindrome (36399363).

The spelling of 23163231 in words is "twenty-three million, one hundred sixty-three thousand, two hundred thirty-one".