23305993 has 2 divisors, whose sum is σ = 23305994. Its totient is φ = 23305992.

The previous prime is 23305981. The next prime is 23306021. The reversal of 23305993 is 39950332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 3485689 = 4452^2 + 1867^2 .

It is a cyclic number.

It is not a de Polignac number, because 23305993 - 2¹³ = 23297801 is a prime.

It is not a weakly prime, because it can be changed into another prime (23305943) 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, 11652996 + 11652997.

It is an arithmetic number, because the mean of its divisors is an integer number (11652997).

Almost surely, 2^23305993 is an apocalyptic number.

It is an amenable number.

23305993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23305993 is an equidigital number, since it uses as much as digits as its factorization.

23305993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 34.

The square root of 23305993 is about 4827.6280925523. The cubic root of 23305993 is about 285.6423104295.

The spelling of 23305993 in words is "twenty-three million, three hundred five thousand, nine hundred ninety-three".