320213252 has 6 divisors (see below), whose sum is σ = 560373198. Its totient is φ = 160106624.

The previous prime is 320213197. The next prime is 320213261. The reversal of 320213252 is 252312023.

320213252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 280093696 + 40119556 = 16736^2 + 6334^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40026653 + ... + 40026660.

It is an arithmetic number, because the mean of its divisors is an integer number (93395533).

Almost surely, 2^320213252 is an apocalyptic number.

It is an amenable number.

320213252 is a deficient number, since it is larger than the sum of its proper divisors (240159946).

320213252 is a wasteful number, since it uses less digits than its factorization.

320213252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80053317 (or 80053315 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 320213252 is about 17894.5034018829. The cubic root of 320213252 is about 684.1422848444.

Adding to 320213252 its reverse (252312023), we get a palindrome (572525275).

The spelling of 320213252 in words is "three hundred twenty million, two hundred thirteen thousand, two hundred fifty-two".