316646243 has 2 divisors, whose sum is σ = 316646244. Its totient is φ = 316646242.

The previous prime is 316646207. The next prime is 316646249. The reversal of 316646243 is 342646613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316646243 - 2¹⁶ = 316580707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (316646249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158323121 + 158323122.

It is an arithmetic number, because the mean of its divisors is an integer number (158323122).

Almost surely, 2^316646243 is an apocalyptic number.

316646243 is a deficient number, since it is larger than the sum of its proper divisors (1).

316646243 is an equidigital number, since it uses as much as digits as its factorization.

316646243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 35.

The square root of 316646243 is about 17794.5565553065. The cubic root of 316646243 is about 681.5924636986.

The spelling of 316646243 in words is "three hundred sixteen million, six hundred forty-six thousand, two hundred forty-three".