23220323513 has 2 divisors, whose sum is σ = 23220323514. Its totient is φ = 23220323512.

The previous prime is 23220323471. The next prime is 23220323537. The reversal of 23220323513 is 31532302232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21483351184 + 1736972329 = 146572^2 + 41677^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220323513 - 2³² = 18925356217 is a prime.

It is a super-2 number, since 2×23220323513² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23220323713) 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, 11610161756 + 11610161757.

It is an arithmetic number, because the mean of its divisors is an integer number (11610161757).

Almost surely, 2^23220323513 is an apocalyptic number.

It is an amenable number.

23220323513 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220323513 is an equidigital number, since it uses as much as digits as its factorization.

23220323513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 23220323513 its reverse (31532302232), we get a palindrome (54752625745).

The spelling of 23220323513 in words is "twenty-three billion, two hundred twenty million, three hundred twenty-three thousand, five hundred thirteen".