23185133 has 2 divisors, whose sum is σ = 23185134. Its totient is φ = 23185132.

The previous prime is 23185109. The next prime is 23185139. The reversal of 23185133 is 33158132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 20164 = 4813^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 23185133 - 2⁸ = 23184877 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23185139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11592566 + 11592567.

It is an arithmetic number, because the mean of its divisors is an integer number (11592567).

Almost surely, 2^23185133 is an apocalyptic number.

It is an amenable number.

23185133 is a deficient number, since it is larger than the sum of its proper divisors (1).

23185133 is an equidigital number, since it uses as much as digits as its factorization.

23185133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 23185133 is about 4815.0942877580. The cubic root of 23185133 is about 285.1476940442.

The spelling of 23185133 in words is "twenty-three million, one hundred eighty-five thousand, one hundred thirty-three".