23312539 has 2 divisors, whose sum is σ = 23312540. Its totient is φ = 23312538.

The previous prime is 23312521. The next prime is 23312543. The reversal of 23312539 is 93521332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23312539 - 2¹¹ = 23310491 is a prime.

It is equal to p_1466704 and since 23312539 and 1466704 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23312519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11656269 + 11656270.

It is an arithmetic number, because the mean of its divisors is an integer number (11656270).

Almost surely, 2^23312539 is an apocalyptic number.

23312539 is a deficient number, since it is larger than the sum of its proper divisors (1).

23312539 is an equidigital number, since it uses as much as digits as its factorization.

23312539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 28.

The square root of 23312539 is about 4828.3060176422. The cubic root of 23312539 is about 285.6690508982.

The spelling of 23312539 in words is "twenty-three million, three hundred twelve thousand, five hundred thirty-nine".