320315252 has 12 divisors (see below), whose sum is σ = 571128516. Its totient is φ = 157135680.

The previous prime is 320315251. The next prime is 320315257. The reversal of 320315252 is 252513023.

It can be written as a sum of positive squares in 2 ways, for example, as 216560656 + 103754596 = 14716^2 + 10186^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320315251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755249 + ... + 755672.

It is an arithmetic number, because the mean of its divisors is an integer number (47594043).

Almost surely, 2^320315252 is an apocalyptic number.

It is an amenable number.

320315252 is a deficient number, since it is larger than the sum of its proper divisors (250813264).

320315252 is a wasteful number, since it uses less digits than its factorization.

320315252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510978 (or 1510976 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 320315252 is about 17897.3532121373. The cubic root of 320315252 is about 684.2149188411.

Adding to 320315252 its reverse (252513023), we get a palindrome (572828275).

The spelling of 320315252 in words is "three hundred twenty million, three hundred fifteen thousand, two hundred fifty-two".