23210231 has 4 divisors (see below), whose sum is σ = 25320264. Its totient is φ = 21100200.

The previous prime is 23210189. The next prime is 23210249. The reversal of 23210231 is 13201232.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-23210231 is a prime.

It is a super-2 number, since 2×23210231² = 1077429646146722, 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 (23210251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055000 + ... + 1055021.

It is an arithmetic number, because the mean of its divisors is an integer number (6330066).

Almost surely, 2^23210231 is an apocalyptic number.

23210231 is a deficient number, since it is larger than the sum of its proper divisors (2110033).

23210231 is a wasteful number, since it uses less digits than its factorization.

23210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110032.

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

The square root of 23210231 is about 4817.6997623347. The cubic root of 23210231 is about 285.2505481161.

Adding to 23210231 its reverse (13201232), we get a palindrome (36411463).

The spelling of 23210231 in words is "twenty-three million, two hundred ten thousand, two hundred thirty-one".