23985187 has 2 divisors, whose sum is σ = 23985188. Its totient is φ = 23985186.

The previous prime is 23985167. The next prime is 23985191. The reversal of 23985187 is 78158932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23985187 - 2²³ = 15596579 is a prime.

It is not a weakly prime, because it can be changed into another prime (23985107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11992593 + 11992594.

It is an arithmetic number, because the mean of its divisors is an integer number (11992594).

Almost surely, 2^23985187 is an apocalyptic number.

23985187 is a deficient number, since it is larger than the sum of its proper divisors (1).

23985187 is an equidigital number, since it uses as much as digits as its factorization.

23985187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 23985187 is about 4897.4674067318. The cubic root of 23985187 is about 288.3905572844.

The spelling of 23985187 in words is "twenty-three million, nine hundred eighty-five thousand, one hundred eighty-seven".