23613239 has 4 divisors (see below), whose sum is σ = 25429656. Its totient is φ = 21796824.

The previous prime is 23613217. The next prime is 23613259. The reversal of 23613239 is 93231632.

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 23613239 - 2¹² = 23609143 is a prime.

It is a super-2 number, since 2×23613239² = 1115170112142242, 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 (23613259) 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, 908189 + ... + 908214.

It is an arithmetic number, because the mean of its divisors is an integer number (6357414).

Almost surely, 2^23613239 is an apocalyptic number.

23613239 is a deficient number, since it is larger than the sum of its proper divisors (1816417).

23613239 is a wasteful number, since it uses less digits than its factorization.

23613239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816416.

The product of its digits is 5832, while the sum is 29.

The square root of 23613239 is about 4859.3455320650. The cubic root of 23613239 is about 286.8920547323.

The spelling of 23613239 in words is "twenty-three million, six hundred thirteen thousand, two hundred thirty-nine".