23896181 has 2 divisors, whose sum is σ = 23896182. Its totient is φ = 23896180.

The previous prime is 23896177. The next prime is 23896189. The reversal of 23896181 is 18169832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 11115556 = 3575^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 23896181 - 2² = 23896177 is a prime.

It is a super-2 number, since 2×23896181² = 1142054932769522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

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 a weakly prime, because it can be changed into another prime (23896189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948090 + 11948091.

It is an arithmetic number, because the mean of its divisors is an integer number (11948091).

Almost surely, 2^23896181 is an apocalyptic number.

It is an amenable number.

23896181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23896181 is an equidigital number, since it uses as much as digits as its factorization.

23896181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 23896181 is about 4888.3720193946. The cubic root of 23896181 is about 288.0333881366.

The spelling of 23896181 in words is "twenty-three million, eight hundred ninety-six thousand, one hundred eighty-one".