23216239 has 2 divisors, whose sum is σ = 23216240. Its totient is φ = 23216238.

The previous prime is 23216183. The next prime is 23216243. The reversal of 23216239 is 93261232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23216239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23216939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11608119 + 11608120.

It is an arithmetic number, because the mean of its divisors is an integer number (11608120).

Almost surely, 2^23216239 is an apocalyptic number.

23216239 is a deficient number, since it is larger than the sum of its proper divisors (1).

23216239 is an equidigital number, since it uses as much as digits as its factorization.

23216239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 23216239 is about 4818.3232560716. The cubic root of 23216239 is about 285.2751584908.

It can be divided in two parts, 232 and 16239, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 23216239 in words is "twenty-three million, two hundred sixteen thousand, two hundred thirty-nine".