23641231 has 4 divisors (see below), whose sum is σ = 23651200. Its totient is φ = 23631264.

The previous prime is 23641229. The next prime is 23641249. The reversal of 23641231 is 13214632.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23641231 - 2¹ = 23641229 is a prime.

It is a super-2 number, since 2×23641231² = 1117815606390722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641201) 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, 850 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (5912800).

Almost surely, 2^23641231 is an apocalyptic number.

23641231 is a deficient number, since it is larger than the sum of its proper divisors (9969).

23641231 is an equidigital number, since it uses as much as digits as its factorization.

23641231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968.

The product of its digits is 864, while the sum is 22.

The square root of 23641231 is about 4862.2249022438. The cubic root of 23641231 is about 287.0053740895.

Adding to 23641231 its reverse (13214632), we get a palindrome (36855863).

The spelling of 23641231 in words is "twenty-three million, six hundred forty-one thousand, two hundred thirty-one".