316680857 has 2 divisors, whose sum is σ = 316680858. Its totient is φ = 316680856.

The previous prime is 316680821. The next prime is 316680887. The reversal of 316680857 is 758086613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304991296 + 11689561 = 17464^2 + 3419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316680857 is a prime.

It is not a weakly prime, because it can be changed into another prime (316680887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158340428 + 158340429.

It is an arithmetic number, because the mean of its divisors is an integer number (158340429).

Almost surely, 2^316680857 is an apocalyptic number.

It is an amenable number.

316680857 is a deficient number, since it is larger than the sum of its proper divisors (1).

316680857 is an equidigital number, since it uses as much as digits as its factorization.

316680857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 316680857 is about 17795.5291295314. The cubic root of 316680857 is about 681.6172987550.

The spelling of 316680857 in words is "three hundred sixteen million, six hundred eighty thousand, eight hundred fifty-seven".