316985237 has 2 divisors, whose sum is σ = 316985238. Its totient is φ = 316985236.

The previous prime is 316985203. The next prime is 316985299. The reversal of 316985237 is 732589613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316626436 + 358801 = 17794^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 316985237 - 2⁶ = 316985173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316915237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158492618 + 158492619.

It is an arithmetic number, because the mean of its divisors is an integer number (158492619).

Almost surely, 2^316985237 is an apocalyptic number.

It is an amenable number.

316985237 is a deficient number, since it is larger than the sum of its proper divisors (1).

316985237 is an equidigital number, since it uses as much as digits as its factorization.

316985237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 316985237 is about 17804.0792235937. The cubic root of 316985237 is about 681.8356092230.

The spelling of 316985237 in words is "three hundred sixteen million, nine hundred eighty-five thousand, two hundred thirty-seven".