23135187 has 6 divisors (see below), whose sum is σ = 30858028. Its totient is φ = 15417904.

The previous prime is 23135153. The next prime is 23135191. The reversal of 23135187 is 78153132.

It is not a de Polignac number, because 23135187 - 2⁷ = 23135059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23135107) 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 in 5 ways as a sum of consecutive naturals, for example, 6943 + ... + 9719.

Almost surely, 2^23135187 is an apocalyptic number.

23135187 is a deficient number, since it is larger than the sum of its proper divisors (7722841).

23135187 is an frugal number, since it uses more digits than its factorization.

23135187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557 (or 2780 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 23135187 is about 4809.9050926188. The cubic root of 23135187 is about 284.9427893782.

The spelling of 23135187 in words is "twenty-three million, one hundred thirty-five thousand, one hundred eighty-seven".