316442320 has 20 divisors (see below), whose sum is σ = 735728580. Its totient is φ = 126576896.

The previous prime is 316442299. The next prime is 316442351. The reversal of 316442320 is 23244613.

It can be written as a sum of positive squares in 2 ways, for example, as 141991056 + 174451264 = 11916^2 + 13208^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977685 + ... + 1977844.

It is an arithmetic number, because the mean of its divisors is an integer number (36786429).

Almost surely, 2^316442320 is an apocalyptic number.

It is an amenable number.

316442320 is an abundant number, since it is smaller than the sum of its proper divisors (419286260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

316442320 is a wasteful number, since it uses less digits than its factorization.

316442320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955542 (or 3955536 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 316442320 is about 17788.8257060437. The cubic root of 316442320 is about 681.4461150723.

Adding to 316442320 its reverse (23244613), we get a palindrome (339686933).

The spelling of 316442320 in words is "three hundred sixteen million, four hundred forty-two thousand, three hundred twenty".