320312322 has 24 divisors (see below), whose sum is σ = 757102320. Its totient is φ = 97064280.

The previous prime is 320312299. The next prime is 320312353. The reversal of 320312322 is 223213023.

It is a happy number.

320312322 is a `hidden beast` number, since 32 + 0 + 312 + 322 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 320312295 and 320312304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808672 + ... + 809067.

It is an arithmetic number, because the mean of its divisors is an integer number (31545930).

Almost surely, 2^320312322 is an apocalyptic number.

320312322 is an abundant number, since it is smaller than the sum of its proper divisors (436789998).

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

320312322 is a wasteful number, since it uses less digits than its factorization.

320312322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617758 (or 1617755 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320312322 is about 17897.2713562710. The cubic root of 320312322 is about 684.2128326091.

Adding to 320312322 its reverse (223213023), we get a palindrome (543525345).

The spelling of 320312322 in words is "three hundred twenty million, three hundred twelve thousand, three hundred twenty-two".