316246561 has 2 divisors, whose sum is σ = 316246562. Its totient is φ = 316246560.

The previous prime is 316246543. The next prime is 316246577. The reversal of 316246561 is 165642613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315950625 + 295936 = 17775^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 316246561 - 2¹⁹ = 315722273 is a prime.

It is not a weakly prime, because it can be changed into another prime (316246501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158123280 + 158123281.

It is an arithmetic number, because the mean of its divisors is an integer number (158123281).

Almost surely, 2^316246561 is an apocalyptic number.

It is an amenable number.

316246561 is a deficient number, since it is larger than the sum of its proper divisors (1).

316246561 is an equidigital number, since it uses as much as digits as its factorization.

316246561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 316246561 is about 17783.3225523241. The cubic root of 316246561 is about 681.3055663118.

The spelling of 316246561 in words is "three hundred sixteen million, two hundred forty-six thousand, five hundred sixty-one".