30817217317 has 2 divisors, whose sum is σ = 30817217318. Its totient is φ = 30817217316.

The previous prime is 30817217297. The next prime is 30817217351. The reversal of 30817217317 is 71371271803.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26499281796 + 4317935521 = 162786^2 + 65711^2 .

It is a cyclic number.

It is not a de Polignac number, because 30817217317 - 2¹¹ = 30817215269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30817217317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30817217377) 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, 15408608658 + 15408608659.

It is an arithmetic number, because the mean of its divisors is an integer number (15408608659).

Almost surely, 2^30817217317 is an apocalyptic number.

It is an amenable number.

30817217317 is a deficient number, since it is larger than the sum of its proper divisors (1).

30817217317 is an equidigital number, since it uses as much as digits as its factorization.

30817217317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 40.

The spelling of 30817217317 in words is "thirty billion, eight hundred seventeen million, two hundred seventeen thousand, three hundred seventeen".