316722709 has 2 divisors, whose sum is σ = 316722710. Its totient is φ = 316722708.

The previous prime is 316722697. The next prime is 316722737. The reversal of 316722709 is 907227613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308002500 + 8720209 = 17550^2 + 2953^2 .

It is a cyclic number.

It is not a de Polignac number, because 316722709 - 2⁵ = 316722677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316722209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158361354 + 158361355.

It is an arithmetic number, because the mean of its divisors is an integer number (158361355).

Almost surely, 2^316722709 is an apocalyptic number.

It is an amenable number.

316722709 is a deficient number, since it is larger than the sum of its proper divisors (1).

316722709 is an equidigital number, since it uses as much as digits as its factorization.

316722709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 316722709 is about 17796.7050040169. The cubic root of 316722709 is about 681.6473245575.

The spelling of 316722709 in words is "three hundred sixteen million, seven hundred twenty-two thousand, seven hundred nine".