23620231 has 4 divisors (see below), whose sum is σ = 23651032. Its totient is φ = 23589432.

The previous prime is 23620229. The next prime is 23620243. The reversal of 23620231 is 13202632.

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 23620231 - 2¹ = 23620229 is a prime.

It is a super-2 number, since 2×23620231² = 1115830624986722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23620199 and 23620208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23620271) 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, 14220 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (5912758).

Almost surely, 2^23620231 is an apocalyptic number.

23620231 is a deficient number, since it is larger than the sum of its proper divisors (30801).

23620231 is an equidigital number, since it uses as much as digits as its factorization.

23620231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30800.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 23620231 is about 4860.0649172619. The cubic root of 23620231 is about 286.9203686693.

Adding to 23620231 its reverse (13202632), we get a palindrome (36822863).

The spelling of 23620231 in words is "twenty-three million, six hundred twenty thousand, two hundred thirty-one".