23123239 has 2 divisors, whose sum is σ = 23123240. Its totient is φ = 23123238.

The previous prime is 23123231. The next prime is 23123251. The reversal of 23123239 is 93232132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23123239 - 2³ = 23123231 is a prime.

It is a super-2 number, since 2×23123239² = 1069368363702242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23123231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561619 + 11561620.

It is an arithmetic number, because the mean of its divisors is an integer number (11561620).

Almost surely, 2^23123239 is an apocalyptic number.

23123239 is a deficient number, since it is larger than the sum of its proper divisors (1).

23123239 is an equidigital number, since it uses as much as digits as its factorization.

23123239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

The square root of 23123239 is about 4808.6629118706. The cubic root of 23123239 is about 284.8937287173.

The spelling of 23123239 in words is "twenty-three million, one hundred twenty-three thousand, two hundred thirty-nine".