23206231 has 4 divisors (see below), whose sum is σ = 23222232. Its totient is φ = 23190232.

The previous prime is 23206213. The next prime is 23206237. The reversal of 23206231 is 13260232.

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 23206231 - 2⁵ = 23206199 is a prime.

It is a super-2 number, since 2×23206231² = 1077058314450722, 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 = 23206199 and 23206208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23206237) 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, 5581 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (5805558).

Almost surely, 2^23206231 is an apocalyptic number.

23206231 is a deficient number, since it is larger than the sum of its proper divisors (16001).

23206231 is a wasteful number, since it uses less digits than its factorization.

23206231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000.

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

The square root of 23206231 is about 4817.2846085736. The cubic root of 23206231 is about 285.2341606913.

Adding to 23206231 its reverse (13260232), we get a palindrome (36466463).

The spelling of 23206231 in words is "twenty-three million, two hundred six thousand, two hundred thirty-one".