23133439 has 6 divisors (see below), whose sum is σ = 26910384. Its totient is φ = 19828620.

The previous prime is 23133437. The next prime is 23133497. The reversal of 23133439 is 93433132.

It is not a de Polignac number, because 23133439 - 2¹ = 23133437 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 (23133437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236007 + ... + 236104.

It is an arithmetic number, because the mean of its divisors is an integer number (4485064).

Almost surely, 2^23133439 is an apocalyptic number.

23133439 is a deficient number, since it is larger than the sum of its proper divisors (3776945).

23133439 is an equidigital number, since it uses as much as digits as its factorization.

23133439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472125 (or 472118 counting only the distinct ones).

The product of its digits is 5832, while the sum is 28.

The square root of 23133439 is about 4809.7233808193. The cubic root of 23133439 is about 284.9356128273.

It can be divided in two parts, 231 and 33439, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 23133439 in words is "twenty-three million, one hundred thirty-three thousand, four hundred thirty-nine".