23220313217 has 2 divisors, whose sum is σ = 23220313218. Its totient is φ = 23220313216.

The previous prime is 23220313183. The next prime is 23220313219. The reversal of 23220313217 is 71231302232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16547220496 + 6673092721 = 128636^2 + 81689^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220313217 - 2¹⁴ = 23220296833 is a prime.

Together with 23220313219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23220313219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610156608 + 11610156609.

It is an arithmetic number, because the mean of its divisors is an integer number (11610156609).

Almost surely, 2^23220313217 is an apocalyptic number.

It is an amenable number.

23220313217 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220313217 is an equidigital number, since it uses as much as digits as its factorization.

23220313217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 23220313217 its reverse (71231302232), we get a palindrome (94451615449).

The spelling of 23220313217 in words is "twenty-three billion, two hundred twenty million, three hundred thirteen thousand, two hundred seventeen".