316656449 has 2 divisors, whose sum is σ = 316656450. Its totient is φ = 316656448.

The previous prime is 316656443. The next prime is 316656491. The reversal of 316656449 is 944656613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291726400 + 24930049 = 17080^2 + 4993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316656449 is a prime.

It is not a weakly prime, because it can be changed into another prime (316656443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158328224 + 158328225.

It is an arithmetic number, because the mean of its divisors is an integer number (158328225).

Almost surely, 2^316656449 is an apocalyptic number.

It is an amenable number.

316656449 is a deficient number, since it is larger than the sum of its proper divisors (1).

316656449 is an equidigital number, since it uses as much as digits as its factorization.

316656449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 316656449 is about 17794.8433260875. The cubic root of 316656449 is about 681.5997865477.

It can be divided in two parts, 3166564 and 49, that added together give a palindrome (3166613).

The spelling of 316656449 in words is "three hundred sixteen million, six hundred fifty-six thousand, four hundred forty-nine".