23020231 has 4 divisors (see below), whose sum is σ = 24791032. Its totient is φ = 21249432.

The previous prime is 23020201. The next prime is 23020273. The reversal of 23020231 is 13202032.

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 23020231 - 2⁵ = 23020199 is a prime.

It is a super-2 number, since 2×23020231² = 1059862070586722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1770787 = 23020231 / (2 + 3 + 0 + 2 + 0 + 2 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020201) 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, 885381 + ... + 885406.

It is an arithmetic number, because the mean of its divisors is an integer number (6197758).

Almost surely, 2^23020231 is an apocalyptic number.

23020231 is a deficient number, since it is larger than the sum of its proper divisors (1770801).

23020231 is a wasteful number, since it uses less digits than its factorization.

23020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770800.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 23020231 is about 4797.9402872483. The cubic root of 23020231 is about 284.4700565531.

Adding to 23020231 its reverse (13202032), we get a palindrome (36222263).

The spelling of 23020231 in words is "twenty-three million, twenty thousand, two hundred thirty-one".