23696181 has 12 divisors (see below), whose sum is σ = 36241452. Its totient is φ = 14868096.

The previous prime is 23696177. The next prime is 23696191. The reversal of 23696181 is 18169632.

23696181 is a `hidden beast` number, since 2 + 36 + 9 + 618 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17892900 + 5803281 = 4230^2 + 2409^2 .

It is not a de Polignac number, because 23696181 - 2² = 23696177 is a prime.

It is a super-2 number, since 2×23696181² = 1123017987969522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23696191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77286 + ... + 77591.

It is an arithmetic number, because the mean of its divisors is an integer number (3020121).

Almost surely, 2^23696181 is an apocalyptic number.

It is an amenable number.

23696181 is a deficient number, since it is larger than the sum of its proper divisors (12545271).

23696181 is a wasteful number, since it uses less digits than its factorization.

23696181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154900 (or 154897 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 23696181 is about 4867.8723278245. The cubic root of 23696181 is about 287.2275670047.

The spelling of 23696181 in words is "twenty-three million, six hundred ninety-six thousand, one hundred eighty-one".