23201231 has 4 divisors (see below), whose sum is σ = 23226192. Its totient is φ = 23176272.

The previous prime is 23201197. The next prime is 23201251. The reversal of 23201231 is 13210232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23201231 - 2¹⁰ = 23200207 is a prime.

It is a super-2 number, since 2×23201231² = 1076594239830722, 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 (23201251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11030 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (5806548).

Almost surely, 2^23201231 is an apocalyptic number.

23201231 is a deficient number, since it is larger than the sum of its proper divisors (24961).

23201231 is an equidigital number, since it uses as much as digits as its factorization.

23201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24960.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23201231 is about 4816.7656160540. The cubic root of 23201231 is about 285.2136737620.

Adding to 23201231 its reverse (13210232), we get a palindrome (36411463).

Subtracting from 23201231 its reverse (13210232), we obtain a palindrome (9990999).

It can be divided in two parts, 23201 and 231, that added together give a palindrome (23432).

The spelling of 23201231 in words is "twenty-three million, two hundred one thousand, two hundred thirty-one".