316553309 has 2 divisors, whose sum is σ = 316553310. Its totient is φ = 316553308.

The previous prime is 316553297. The next prime is 316553327. The reversal of 316553309 is 903355613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284596900 + 31956409 = 16870^2 + 5653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316553309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316553609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158276654 + 158276655.

It is an arithmetic number, because the mean of its divisors is an integer number (158276655).

Almost surely, 2^316553309 is an apocalyptic number.

It is an amenable number.

316553309 is a deficient number, since it is larger than the sum of its proper divisors (1).

316553309 is an equidigital number, since it uses as much as digits as its factorization.

316553309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 35.

The square root of 316553309 is about 17791.9450594925. The cubic root of 316553309 is about 681.5257759112.

The spelling of 316553309 in words is "three hundred sixteen million, five hundred fifty-three thousand, three hundred nine".