23720923 has 2 divisors, whose sum is σ = 23720924. Its totient is φ = 23720922.

The previous prime is 23720909. The next prime is 23720941. The reversal of 23720923 is 32902732.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23720923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23720891 and 23720900.

It is not a weakly prime, because it can be changed into another prime (23720023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11860461 + 11860462.

It is an arithmetic number, because the mean of its divisors is an integer number (11860462).

Almost surely, 2^23720923 is an apocalyptic number.

23720923 is a deficient number, since it is larger than the sum of its proper divisors (1).

23720923 is an equidigital number, since it uses as much as digits as its factorization.

23720923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 23720923 is about 4870.4130215003. The cubic root of 23720923 is about 287.3275003018.

The spelling of 23720923 in words is "twenty-three million, seven hundred twenty thousand, nine hundred twenty-three".