168020317 has 2 divisors, whose sum is σ = 168020318. Its totient is φ = 168020316.

The previous prime is 168020311. The next prime is 168020323. The reversal of 168020317 is 713020861.

It is a balanced prime because it is at equal distance from previous prime (168020311) and next prime (168020323).

It can be written as a sum of positive squares in only one way, i.e., 164711556 + 3308761 = 12834^2 + 1819^2 .

It is a cyclic number.

It is not a de Polignac number, because 168020317 - 2⁷ = 168020189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168020311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84010158 + 84010159.

It is an arithmetic number, because the mean of its divisors is an integer number (84010159).

Almost surely, 2^168020317 is an apocalyptic number.

It is an amenable number.

168020317 is a deficient number, since it is larger than the sum of its proper divisors (1).

168020317 is an equidigital number, since it uses as much as digits as its factorization.

168020317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 168020317 is about 12962.2651184120. The cubic root of 168020317 is about 551.8070776584.

The spelling of 168020317 in words is "one hundred sixty-eight million, twenty thousand, three hundred seventeen".