23166139 has 2 divisors, whose sum is σ = 23166140. Its totient is φ = 23166138.

The previous prime is 23166137. The next prime is 23166151. The reversal of 23166139 is 93166132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23166139 - 2¹ = 23166137 is a prime.

Together with 23166137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23166139.

It is not a weakly prime, because it can be changed into another prime (23166137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11583069 + 11583070.

It is an arithmetic number, because the mean of its divisors is an integer number (11583070).

Almost surely, 2^23166139 is an apocalyptic number.

23166139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23166139 is an equidigital number, since it uses as much as digits as its factorization.

23166139 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23166139 is about 4813.1215442787. The cubic root of 23166139 is about 285.0698054106.

The spelling of 23166139 in words is "twenty-three million, one hundred sixty-six thousand, one hundred thirty-nine".