23129723 has 2 divisors, whose sum is σ = 23129724. Its totient is φ = 23129722.

The previous prime is 23129683. The next prime is 23129759. The reversal of 23129723 is 32792132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23129723 is a prime.

It is not a weakly prime, because it can be changed into another prime (23129923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11564861 + 11564862.

It is an arithmetic number, because the mean of its divisors is an integer number (11564862).

Almost surely, 2^23129723 is an apocalyptic number.

23129723 is a deficient number, since it is larger than the sum of its proper divisors (1).

23129723 is an equidigital number, since it uses as much as digits as its factorization.

23129723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 23129723 is about 4809.3370645028. The cubic root of 23129723 is about 284.9203552970.

The spelling of 23129723 in words is "twenty-three million, one hundred twenty-nine thousand, seven hundred twenty-three".