23305313 has 2 divisors, whose sum is σ = 23305314. Its totient is φ = 23305312.

The previous prime is 23305309. The next prime is 23305327. The reversal of 23305313 is 31350332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18861649 + 4443664 = 4343^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 23305313 - 2² = 23305309 is a prime.

It is a super-2 number, since 2×23305313² = 1086275228055938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23305363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11652656 + 11652657.

It is an arithmetic number, because the mean of its divisors is an integer number (11652657).

Almost surely, 2^23305313 is an apocalyptic number.

It is an amenable number.

23305313 is a deficient number, since it is larger than the sum of its proper divisors (1).

23305313 is an equidigital number, since it uses as much as digits as its factorization.

23305313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 23305313 is about 4827.5576640782. The cubic root of 23305313 is about 285.6395323363.

Adding to 23305313 its reverse (31350332), we get a palindrome (54655645).

The spelling of 23305313 in words is "twenty-three million, three hundred five thousand, three hundred thirteen".