20303441317 has 2 divisors, whose sum is σ = 20303441318. Its totient is φ = 20303441316.

The previous prime is 20303441299. The next prime is 20303441321. The reversal of 20303441317 is 71314430302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13152878596 + 7150562721 = 114686^2 + 84561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303441317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20303441617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151720658 + 10151720659.

It is an arithmetic number, because the mean of its divisors is an integer number (10151720659).

Almost surely, 2^20303441317 is an apocalyptic number.

It is an amenable number.

20303441317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303441317 is an equidigital number, since it uses as much as digits as its factorization.

20303441317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 20303441317 its reverse (71314430302), we get a palindrome (91617871619).

The spelling of 20303441317 in words is "twenty billion, three hundred three million, four hundred forty-one thousand, three hundred seventeen".