317828681 has 2 divisors, whose sum is σ = 317828682. Its totient is φ = 317828680.

The previous prime is 317828677. The next prime is 317828717. The reversal of 317828681 is 186828713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282912400 + 34916281 = 16820^2 + 5909^2 .

It is a cyclic number.

It is not a de Polignac number, because 317828681 - 2² = 317828677 is a prime.

It is a super-2 number, since 2×317828681² = 202030140932399522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (317828281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158914340 + 158914341.

It is an arithmetic number, because the mean of its divisors is an integer number (158914341).

Almost surely, 2^317828681 is an apocalyptic number.

It is an amenable number.

317828681 is a deficient number, since it is larger than the sum of its proper divisors (1).

317828681 is an equidigital number, since it uses as much as digits as its factorization.

317828681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 317828681 is about 17827.7503067549. The cubic root of 317828681 is about 682.4398233069.

The spelling of 317828681 in words is "three hundred seventeen million, eight hundred twenty-eight thousand, six hundred eighty-one".