23616139 has 2 divisors, whose sum is σ = 23616140. Its totient is φ = 23616138.

The previous prime is 23616133. The next prime is 23616143. The reversal of 23616139 is 93161632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23616139 - 2¹⁷ = 23485067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23616139.

It is not a weakly prime, because it can be changed into another prime (23616133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11808069 + 11808070.

It is an arithmetic number, because the mean of its divisors is an integer number (11808070).

Almost surely, 2^23616139 is an apocalyptic number.

23616139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23616139 is an equidigital number, since it uses as much as digits as its factorization.

23616139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 23616139 is about 4859.6439169964. The cubic root of 23616139 is about 286.9037988913.

The spelling of 23616139 in words is "twenty-three million, six hundred sixteen thousand, one hundred thirty-nine".