320312 has 8 divisors (see below), whose sum is σ = 600600. Its totient is φ = 160152.

The previous prime is 320303. The next prime is 320317. The reversal of 320312 is 213023.

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

It is a junction number, because it is equal to n+sod(n) for n = 320293 and 320302.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320312.

It is not an unprimeable number, because it can be changed into a prime (320317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20012 + ... + 20027.

It is an arithmetic number, because the mean of its divisors is an integer number (75075).

2³²⁰³¹² is an apocalyptic number.

It is an amenable number.

320312 is a deficient number, since it is larger than the sum of its proper divisors (280288).

320312 is a wasteful number, since it uses less digits than its factorization.

320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40045 (or 40041 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 320312 is about 565.9611294073. The cubic root of 320312 is about 68.4212603336.

Adding to 320312 its reverse (213023), we get a palindrome (533335).

The spelling of 320312 in words is "three hundred twenty thousand, three hundred twelve", and thus it is an iban number.