320312032 has 24 divisors (see below), whose sum is σ = 663805800. Its totient is φ = 151726464.

The previous prime is 320312029. The next prime is 320312033. The reversal of 320312032 is 230213023.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 320311997 and 320312015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320312033) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 262807 + ... + 264022.

It is an arithmetic number, because the mean of its divisors is an integer number (27658575).

Almost surely, 2^320312032 is an apocalyptic number.

320312032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320312032 is an abundant number, since it is smaller than the sum of its proper divisors (343493768).

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

320312032 is a wasteful number, since it uses less digits than its factorization.

320312032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526858 (or 526850 counting only the distinct ones).

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

The square root of 320312032 is about 17897.2632544755. The cubic root of 320312032 is about 684.2126261212.

Adding to 320312032 its reverse (230213023), we get a palindrome (550525055).

Subtracting from 320312032 its reverse (230213023), we obtain a palindrome (90099009).

The spelling of 320312032 in words is "three hundred twenty million, three hundred twelve thousand, thirty-two".