202123020317 has 2 divisors, whose sum is σ = 202123020318. Its totient is φ = 202123020316.

The previous prime is 202123020163. The next prime is 202123020343. The reversal of 202123020317 is 713020321202.

202123020317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188090485636 + 14032534681 = 433694^2 + 118459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202123020317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202123020292 and 202123020301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202123020377) 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, 101061510158 + 101061510159.

It is an arithmetic number, because the mean of its divisors is an integer number (101061510159).

Almost surely, 2^202123020317 is an apocalyptic number.

It is an amenable number.

202123020317 is a deficient number, since it is larger than the sum of its proper divisors (1).

202123020317 is an equidigital number, since it uses as much as digits as its factorization.

202123020317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 202123020317 its reverse (713020321202), we get a palindrome (915143341519).

The spelling of 202123020317 in words is "two hundred two billion, one hundred twenty-three million, twenty thousand, three hundred seventeen".