320004312 has 16 divisors (see below), whose sum is σ = 800010840. Its totient is φ = 106668096.

The previous prime is 320004287. The next prime is 320004319. The reversal of 320004312 is 213400023.

320004312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 320004291 and 320004300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320004319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6666733 + ... + 6666780.

Almost surely, 2^320004312 is an apocalyptic number.

It is an amenable number.

320004312 is an abundant number, since it is smaller than the sum of its proper divisors (480006528).

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

320004312 is a wasteful number, since it uses less digits than its factorization.

320004312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13333522 (or 13333518 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 320004312 is about 17888.6643436563. The cubic root of 320004312 is about 683.9934509137.

Adding to 320004312 its reverse (213400023), we get a palindrome (533404335).

The spelling of 320004312 in words is "three hundred twenty million, four thousand, three hundred twelve".