316857641 has 2 divisors, whose sum is σ = 316857642. Its totient is φ = 316857640.

The previous prime is 316857601. The next prime is 316857647. The reversal of 316857641 is 146758613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210685225 + 106172416 = 14515^2 + 10304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316857641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316857647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158428820 + 158428821.

It is an arithmetic number, because the mean of its divisors is an integer number (158428821).

Almost surely, 2^316857641 is an apocalyptic number.

It is an amenable number.

316857641 is a deficient number, since it is larger than the sum of its proper divisors (1).

316857641 is an equidigital number, since it uses as much as digits as its factorization.

316857641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 316857641 is about 17800.4955268105. The cubic root of 316857641 is about 681.7441105640.

The spelling of 316857641 in words is "three hundred sixteen million, eight hundred fifty-seven thousand, six hundred forty-one".