23185136 has 20 divisors (see below), whose sum is σ = 48377112. Its totient is φ = 10700736.

The previous prime is 23185133. The next prime is 23185139. The reversal of 23185136 is 63158132.

It is an interprime number because it is at equal distance from previous prime (23185133) and next prime (23185139).

It is a junction number, because it is equal to n+sod(n) for n = 23185099 and 23185108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23185133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55526 + ... + 55941.

Almost surely, 2^23185136 is an apocalyptic number.

23185136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23185136 is an abundant number, since it is smaller than the sum of its proper divisors (25191976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23185136 is a wasteful number, since it uses less digits than its factorization.

23185136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111488 (or 111482 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 23185136 is about 4815.0945992784. The cubic root of 23185136 is about 285.1477063429.

The spelling of 23185136 in words is "twenty-three million, one hundred eighty-five thousand, one hundred thirty-six".