23345591 has 2 divisors, whose sum is σ = 23345592. Its totient is φ = 23345590.

The previous prime is 23345579. The next prime is 23345593. The reversal of 23345591 is 19554332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23345591 - 2¹⁰ = 23344567 is a prime.

Together with 23345593, 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 (23345593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11672795 + 11672796.

It is an arithmetic number, because the mean of its divisors is an integer number (11672796).

Almost surely, 2^23345591 is an apocalyptic number.

23345591 is a deficient number, since it is larger than the sum of its proper divisors (1).

23345591 is an equidigital number, since it uses as much as digits as its factorization.

23345591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 32.

The square root of 23345591 is about 4831.7275378481. The cubic root of 23345591 is about 285.8039922245.

The spelling of 23345591 in words is "twenty-three million, three hundred forty-five thousand, five hundred ninety-one".