23305717 has 2 divisors, whose sum is σ = 23305718. Its totient is φ = 23305716.

The previous prime is 23305703. The next prime is 23305771. The reversal of 23305717 is 71750332.

Together with next prime (23305771) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13608721 + 9696996 = 3689^2 + 3114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23305717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23305517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11652858 + 11652859.

It is an arithmetic number, because the mean of its divisors is an integer number (11652859).

Almost surely, 2^23305717 is an apocalyptic number.

It is an amenable number.

23305717 is a deficient number, since it is larger than the sum of its proper divisors (1).

23305717 is an equidigital number, since it uses as much as digits as its factorization.

23305717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 23305717 is about 4827.5995070014. The cubic root of 23305717 is about 285.6411828570.

The spelling of 23305717 in words is "twenty-three million, three hundred five thousand, seven hundred seventeen".