20302020317 has 2 divisors, whose sum is σ = 20302020318. Its totient is φ = 20302020316.

The previous prime is 20302020289. The next prime is 20302020337. The reversal of 20302020317 is 71302020302.

It is an a-pointer prime, because the next prime (20302020337) can be obtained adding 20302020317 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16145768356 + 4156251961 = 127066^2 + 64469^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302020317 - 2²⁰ = 20300971741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302020337) 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, 10151010158 + 10151010159.

It is an arithmetic number, because the mean of its divisors is an integer number (10151010159).

Almost surely, 2^20302020317 is an apocalyptic number.

It is an amenable number.

20302020317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302020317 is an equidigital number, since it uses as much as digits as its factorization.

20302020317 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 20302020317 its reverse (71302020302), we get a palindrome (91604040619).

The spelling of 20302020317 in words is "twenty billion, three hundred two million, twenty thousand, three hundred seventeen".