23493391 has 2 divisors, whose sum is σ = 23493392. Its totient is φ = 23493390.

The previous prime is 23493389. The next prime is 23493433. The reversal of 23493391 is 19339432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23493391 - 2¹ = 23493389 is a prime.

Together with 23493389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23490391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11746695 + 11746696.

It is an arithmetic number, because the mean of its divisors is an integer number (11746696).

Almost surely, 2^23493391 is an apocalyptic number.

23493391 is a deficient number, since it is larger than the sum of its proper divisors (1).

23493391 is an equidigital number, since it uses as much as digits as its factorization.

23493391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 23493391 is about 4846.9981431810. The cubic root of 23493391 is about 286.4058617380.

The spelling of 23493391 in words is "twenty-three million, four hundred ninety-three thousand, three hundred ninety-one".