320312120 has 16 divisors (see below), whose sum is σ = 720702360. Its totient is φ = 128124832.

The previous prime is 320312077. The next prime is 320312177. The reversal of 320312120 is 21213023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320312095 and 320312104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4003862 + ... + 4003941.

Almost surely, 2^320312120 is an apocalyptic number.

It is an amenable number.

320312120 is an abundant number, since it is smaller than the sum of its proper divisors (400390240).

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

320312120 is a wasteful number, since it uses less digits than its factorization.

320312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8007814 (or 8007810 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 320312120 is about 17897.2657129518. The cubic root of 320312120 is about 684.2126887796.

Adding to 320312120 its reverse (21213023), we get a palindrome (341525143).

The spelling of 320312120 in words is "three hundred twenty million, three hundred twelve thousand, one hundred twenty".