320230312 has 8 divisors (see below), whose sum is σ = 600431850. Its totient is φ = 160115152.

The previous prime is 320230303. The next prime is 320230327. The reversal of 320230312 is 213032023.

It can be written as a sum of positive squares in only one way, i.e., 209265156 + 110965156 = 14466^2 + 10534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 20014387 + ... + 20014402.

Almost surely, 2^320230312 is an apocalyptic number.

It is an amenable number.

320230312 is a deficient number, since it is larger than the sum of its proper divisors (280201538).

320230312 is a wasteful number, since it uses less digits than its factorization.

320230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40028795 (or 40028791 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320230312 is about 17894.9800782231. The cubic root of 320230312 is about 684.1544343104.

Adding to 320230312 its reverse (213032023), we get a palindrome (533262335).

The spelling of 320230312 in words is "three hundred twenty million, two hundred thirty thousand, three hundred twelve".