316608521 has 2 divisors, whose sum is σ = 316608522. Its totient is φ = 316608520.

The previous prime is 316608503. The next prime is 316608541. The reversal of 316608521 is 125806613.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316448521 + 160000 = 17789^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 316608521 - 2¹⁴ = 316592137 is a prime.

It is not a weakly prime, because it can be changed into another prime (316608541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158304260 + 158304261.

It is an arithmetic number, because the mean of its divisors is an integer number (158304261).

Almost surely, 2^316608521 is an apocalyptic number.

It is an amenable number.

316608521 is a deficient number, since it is larger than the sum of its proper divisors (1).

316608521 is an equidigital number, since it uses as much as digits as its factorization.

316608521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 316608521 is about 17793.4965928566. The cubic root of 316608521 is about 681.5653966350.

The spelling of 316608521 in words is "three hundred sixteen million, six hundred eight thousand, five hundred twenty-one".