316302661 has 2 divisors, whose sum is σ = 316302662. Its totient is φ = 316302660.

The previous prime is 316302653. The next prime is 316302667. The reversal of 316302661 is 166203613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308002500 + 8300161 = 17550^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 316302661 - 2³ = 316302653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316302667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158151330 + 158151331.

It is an arithmetic number, because the mean of its divisors is an integer number (158151331).

Almost surely, 2^316302661 is an apocalyptic number.

It is an amenable number.

316302661 is a deficient number, since it is larger than the sum of its proper divisors (1).

316302661 is an equidigital number, since it uses as much as digits as its factorization.

316302661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 316302661 is about 17784.8998029227. The cubic root of 316302661 is about 681.3458502623.

The spelling of 316302661 in words is "three hundred sixteen million, three hundred two thousand, six hundred sixty-one".