23030729 has 2 divisors, whose sum is σ = 23030730. Its totient is φ = 23030728.

The previous prime is 23030713. The next prime is 23030731. The reversal of 23030729 is 92703032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 182329 = 4780^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 23030729 - 2⁴ = 23030713 is a prime.

It is a Sophie Germain prime.

Together with 23030731, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23030698 and 23030707.

It is not a weakly prime, because it can be changed into another prime (23030789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515364 + 11515365.

It is an arithmetic number, because the mean of its divisors is an integer number (11515365).

Almost surely, 2^23030729 is an apocalyptic number.

It is an amenable number.

23030729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23030729 is an equidigital number, since it uses as much as digits as its factorization.

23030729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 23030729 is about 4799.0341736645. The cubic root of 23030729 is about 284.5132926210.

The spelling of 23030729 in words is "twenty-three million, thirty thousand, seven hundred twenty-nine".