23473181 has 2 divisors, whose sum is σ = 23473182. Its totient is φ = 23473180.

The previous prime is 23473171. The next prime is 23473183. The reversal of 23473181 is 18137432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23367556 + 105625 = 4834^2 + 325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23473181 is a prime.

It is a super-2 number, since 2×23473181² = 1101980452517522, which contains 22 as substring.

Together with 23473183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23473183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11736590 + 11736591.

It is an arithmetic number, because the mean of its divisors is an integer number (11736591).

Almost surely, 2^23473181 is an apocalyptic number.

It is an amenable number.

23473181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23473181 is an equidigital number, since it uses as much as digits as its factorization.

23473181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 23473181 is about 4844.9128991139. The cubic root of 23473181 is about 286.3237120670.

The spelling of 23473181 in words is "twenty-three million, four hundred seventy-three thousand, one hundred eighty-one".