20203322317 has 2 divisors, whose sum is σ = 20203322318. Its totient is φ = 20203322316.

The previous prime is 20203322299. The next prime is 20203322339. The reversal of 20203322317 is 71322330202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17991125161 + 2212197156 = 134131^2 + 47034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203322317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20203322291 and 20203322300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203322717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101661158 + 10101661159.

It is an arithmetic number, because the mean of its divisors is an integer number (10101661159).

Almost surely, 2^20203322317 is an apocalyptic number.

It is an amenable number.

20203322317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203322317 is an equidigital number, since it uses as much as digits as its factorization.

20203322317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

Adding to 20203322317 its reverse (71322330202), we get a palindrome (91525652519).

The spelling of 20203322317 in words is "twenty billion, two hundred three million, three hundred twenty-two thousand, three hundred seventeen".