23183681 has 2 divisors, whose sum is σ = 23183682. Its totient is φ = 23183680.

The previous prime is 23183669. The next prime is 23183683. The reversal of 23183681 is 18638132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 297025 = 4784^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 23183681 - 2⁶ = 23183617 is a prime.

It is a super-2 number, since 2×23183681² = 1074966129419522, which contains 22 as substring.

Together with 23183683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23183683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11591840 + 11591841.

It is an arithmetic number, because the mean of its divisors is an integer number (11591841).

Almost surely, 2^23183681 is an apocalyptic number.

It is an amenable number.

23183681 is a deficient number, since it is larger than the sum of its proper divisors (1).

23183681 is an equidigital number, since it uses as much as digits as its factorization.

23183681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 23183681 is about 4814.9435095336. The cubic root of 23183681 is about 285.1417413345.

The spelling of 23183681 in words is "twenty-three million, one hundred eighty-three thousand, six hundred eighty-one".