23004391 has 2 divisors, whose sum is σ = 23004392. Its totient is φ = 23004390.

The previous prime is 23004389. The next prime is 23004409. The reversal of 23004391 is 19340032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23004391 - 2¹ = 23004389 is a prime.

Together with 23004389, 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 (23004691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11502195 + 11502196.

It is an arithmetic number, because the mean of its divisors is an integer number (11502196).

Almost surely, 2^23004391 is an apocalyptic number.

23004391 is a deficient number, since it is larger than the sum of its proper divisors (1).

23004391 is an equidigital number, since it uses as much as digits as its factorization.

23004391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23004391 is about 4796.2892948612. The cubic root of 23004391 is about 284.4047945436.

The spelling of 23004391 in words is "twenty-three million, four thousand, three hundred ninety-one".