85310317 has 2 divisors, whose sum is σ = 85310318. Its totient is φ = 85310316.

The previous prime is 85310293. The next prime is 85310339. The reversal of 85310317 is 71301358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84989961 + 320356 = 9219^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 85310317 - 2¹¹ = 85308269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85310117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42655158 + 42655159.

It is an arithmetic number, because the mean of its divisors is an integer number (42655159).

Almost surely, 2^85310317 is an apocalyptic number.

It is an amenable number.

85310317 is a deficient number, since it is larger than the sum of its proper divisors (1).

85310317 is an equidigital number, since it uses as much as digits as its factorization.

85310317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 85310317 is about 9236.3584274323. The cubic root of 85310317 is about 440.2173805338.

The spelling of 85310317 in words is "eighty-five million, three hundred ten thousand, three hundred seventeen".