23630513 has 2 divisors, whose sum is σ = 23630514. Its totient is φ = 23630512.

The previous prime is 23630423. The next prime is 23630539. The reversal of 23630513 is 31503632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 753424 = 4783^2 + 868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23630513 is a prime.

It is a super-2 number, since 2×23630513² = 1116802289286338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23630543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11815256 + 11815257.

It is an arithmetic number, because the mean of its divisors is an integer number (11815257).

Almost surely, 2^23630513 is an apocalyptic number.

It is an amenable number.

23630513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23630513 is an equidigital number, since it uses as much as digits as its factorization.

23630513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 23630513 is about 4861.1226069705. The cubic root of 23630513 is about 286.9619952347.

The spelling of 23630513 in words is "twenty-three million, six hundred thirty thousand, five hundred thirteen".