23416681 has 2 divisors, whose sum is σ = 23416682. Its totient is φ = 23416680.

The previous prime is 23416663. The next prime is 23416709. The reversal of 23416681 is 18661432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16040025 + 7376656 = 4005^2 + 2716^2 .

It is a cyclic number.

It is not a de Polignac number, because 23416681 - 2⁵ = 23416649 is a prime.

It is a super-2 number, since 2×23416681² = 1096681898111522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23416621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11708340 + 11708341.

It is an arithmetic number, because the mean of its divisors is an integer number (11708341).

Almost surely, 2^23416681 is an apocalyptic number.

It is an amenable number.

23416681 is a deficient number, since it is larger than the sum of its proper divisors (1).

23416681 is an equidigital number, since it uses as much as digits as its factorization.

23416681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 23416681 is about 4839.0785279844. The cubic root of 23416681 is about 286.0938002269.

The spelling of 23416681 in words is "twenty-three million, four hundred sixteen thousand, six hundred eighty-one".