316829521 has 2 divisors, whose sum is σ = 316829522. Its totient is φ = 316829520.

The previous prime is 316829497. The next prime is 316829551. The reversal of 316829521 is 125928613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261177921 + 55651600 = 16161^2 + 7460^2 .

It is an emirp because it is prime and its reverse (125928613) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316829521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316829551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158414760 + 158414761.

It is an arithmetic number, because the mean of its divisors is an integer number (158414761).

Almost surely, 2^316829521 is an apocalyptic number.

It is an amenable number.

316829521 is a deficient number, since it is larger than the sum of its proper divisors (1).

316829521 is an equidigital number, since it uses as much as digits as its factorization.

316829521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 316829521 is about 17799.7056436335. The cubic root of 316829521 is about 681.7239425042.

The spelling of 316829521 in words is "three hundred sixteen million, eight hundred twenty-nine thousand, five hundred twenty-one".