4085319812317 has 2 divisors, whose sum is σ = 4085319812318. Its totient is φ = 4085319812316.

The previous prime is 4085319812293. The next prime is 4085319812369. The reversal of 4085319812317 is 7132189135804.

It is an a-pointer prime, because the next prime (4085319812369) can be obtained adding 4085319812317 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4084659270916 + 660541401 = 2021054^2 + 25701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4085319812317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4085319812377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2042659906158 + 2042659906159.

It is an arithmetic number, because the mean of its divisors is an integer number (2042659906159).

Almost surely, 2^{4085319812317} is an apocalyptic number.

It is an amenable number.

4085319812317 is a deficient number, since it is larger than the sum of its proper divisors (1).

4085319812317 is an equidigital number, since it uses as much as digits as its factorization.

4085319812317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 4085319812317 in words is "four trillion, eighty-five billion, three hundred nineteen million, eight hundred twelve thousand, three hundred seventeen".