23149723 has 2 divisors, whose sum is σ = 23149724. Its totient is φ = 23149722.

The previous prime is 23149717. The next prime is 23149739. The reversal of 23149723 is 32794132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23149723 - 2⁵ = 23149691 is a prime.

It is not a weakly prime, because it can be changed into another prime (23149783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11574861 + 11574862.

It is an arithmetic number, because the mean of its divisors is an integer number (11574862).

Almost surely, 2^23149723 is an apocalyptic number.

23149723 is a deficient number, since it is larger than the sum of its proper divisors (1).

23149723 is an equidigital number, since it uses as much as digits as its factorization.

23149723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 23149723 is about 4811.4159038686. The cubic root of 23149723 is about 285.0024540673.

The spelling of 23149723 in words is "twenty-three million, one hundred forty-nine thousand, seven hundred twenty-three".