23720791 has 2 divisors, whose sum is σ = 23720792. Its totient is φ = 23720790.

The previous prime is 23720789. The next prime is 23720803. The reversal of 23720791 is 19702732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23720791 - 2¹ = 23720789 is a prime.

Together with 23720789, 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 (23720761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11860395 + 11860396.

It is an arithmetic number, because the mean of its divisors is an integer number (11860396).

Almost surely, 2^23720791 is an apocalyptic number.

23720791 is a deficient number, since it is larger than the sum of its proper divisors (1).

23720791 is an equidigital number, since it uses as much as digits as its factorization.

23720791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 23720791 is about 4870.3994702694. The cubic root of 23720791 is about 287.3269673363.

The spelling of 23720791 in words is "twenty-three million, seven hundred twenty thousand, seven hundred ninety-one".