23231239 has 4 divisors (see below), whose sum is σ = 23255856. Its totient is φ = 23206624.

The previous prime is 23231237. The next prime is 23231267. The reversal of 23231239 is 93213232.

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 23231239 - 2¹ = 23231237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231237) 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, 10834 + ... + 12799.

It is an arithmetic number, because the mean of its divisors is an integer number (5813964).

Almost surely, 2^23231239 is an apocalyptic number.

23231239 is a deficient number, since it is larger than the sum of its proper divisors (24617).

23231239 is an equidigital number, since it uses as much as digits as its factorization.

23231239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24616.

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

The square root of 23231239 is about 4819.8795628107. The cubic root of 23231239 is about 285.3365839744.

The spelling of 23231239 in words is "twenty-three million, two hundred thirty-one thousand, two hundred thirty-nine".