23500019 has 2 divisors, whose sum is σ = 23500020. Its totient is φ = 23500018.

The previous prime is 23500013. The next prime is 23500031. The reversal of 23500019 is 91000532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23500019 - 2⁴ = 23500003 is a prime.

It is a super-2 number, since 2×23500019² = 1104501786000722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23500013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11750009 + 11750010.

It is an arithmetic number, because the mean of its divisors is an integer number (11750010).

Almost surely, 2^23500019 is an apocalyptic number.

23500019 is a deficient number, since it is larger than the sum of its proper divisors (1).

23500019 is an equidigital number, since it uses as much as digits as its factorization.

23500019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 23500019 is about 4847.6818171163. The cubic root of 23500019 is about 286.4327929937.

The spelling of 23500019 in words is "twenty-three million, five hundred thousand, nineteen".