23421791 has 2 divisors, whose sum is σ = 23421792. Its totient is φ = 23421790.

The previous prime is 23421787. The next prime is 23421803. The reversal of 23421791 is 19712432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23421791 - 2² = 23421787 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23421691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710895 + 11710896.

It is an arithmetic number, because the mean of its divisors is an integer number (11710896).

Almost surely, 2^23421791 is an apocalyptic number.

23421791 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421791 is an equidigital number, since it uses as much as digits as its factorization.

23421791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 23421791 is about 4839.6064922677. The cubic root of 23421791 is about 286.1146092247.

The spelling of 23421791 in words is "twenty-three million, four hundred twenty-one thousand, seven hundred ninety-one".