20003220317 has 2 divisors, whose sum is σ = 20003220318. Its totient is φ = 20003220316.

The previous prime is 20003220299. The next prime is 20003220331. The reversal of 20003220317 is 71302230002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13921404121 + 6081816196 = 117989^2 + 77986^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003220317 - 2¹² = 20003216221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003220617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001610158 + 10001610159.

It is an arithmetic number, because the mean of its divisors is an integer number (10001610159).

Almost surely, 2^20003220317 is an apocalyptic number.

It is an amenable number.

20003220317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003220317 is an equidigital number, since it uses as much as digits as its factorization.

20003220317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

Adding to 20003220317 its reverse (71302230002), we get a palindrome (91305450319).

The spelling of 20003220317 in words is "twenty billion, three million, two hundred twenty thousand, three hundred seventeen".