23440691 has 2 divisors, whose sum is σ = 23440692. Its totient is φ = 23440690.

The previous prime is 23440679. The next prime is 23440693. The reversal of 23440691 is 19604432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23440691 - 2²² = 19246387 is a prime.

Together with 23440693, 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 (23440693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720345 + 11720346.

It is an arithmetic number, because the mean of its divisors is an integer number (11720346).

Almost surely, 2^23440691 is an apocalyptic number.

23440691 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440691 is an equidigital number, since it uses as much as digits as its factorization.

23440691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 23440691 is about 4841.5587366054. The cubic root of 23440691 is about 286.1915477224.

The spelling of 23440691 in words is "twenty-three million, four hundred forty thousand, six hundred ninety-one".