23452181 has 2 divisors, whose sum is σ = 23452182. Its totient is φ = 23452180.

The previous prime is 23452159. The next prime is 23452183. The reversal of 23452181 is 18125432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23435281 + 16900 = 4841^2 + 130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23452181 is a prime.

It is a super-2 number, since 2×23452181² = 1100009587313522, which contains 22 as substring.

Together with 23452183, it forms a pair of twin primes.

It is a Chen prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23452181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23452183) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11726090 + 11726091.

It is an arithmetic number, because the mean of its divisors is an integer number (11726091).

Almost surely, 2^23452181 is an apocalyptic number.

It is an amenable number.

23452181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23452181 is an equidigital number, since it uses as much as digits as its factorization.

23452181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 26.

The square root of 23452181 is about 4842.7451925535. The cubic root of 23452181 is about 286.2383012324.

The spelling of 23452181 in words is "twenty-three million, four hundred fifty-two thousand, one hundred eighty-one".