23090231 has 4 divisors (see below), whose sum is σ = 23314512. Its totient is φ = 22865952.

The previous prime is 23090219. The next prime is 23090261. The reversal of 23090231 is 13209032.

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 23090231 - 2⁶ = 23090167 is a prime.

It is a super-2 number, since 2×23090231² = 1066317535266722, 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 (23090201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111986 + ... + 112191.

It is an arithmetic number, because the mean of its divisors is an integer number (5828628).

Almost surely, 2^23090231 is an apocalyptic number.

23090231 is a deficient number, since it is larger than the sum of its proper divisors (224281).

23090231 is a wasteful number, since it uses less digits than its factorization.

23090231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224280.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 23090231 is about 4805.2295470664. The cubic root of 23090231 is about 284.7581039702.

Adding to 23090231 its reverse (13209032), we get a palindrome (36299263).

The spelling of 23090231 in words is "twenty-three million, ninety thousand, two hundred thirty-one".