320032321312 has 48 divisors (see below), whose sum is σ = 687840902784. Its totient is φ = 145363680000.

The previous prime is 320032321307. The next prime is 320032321327. The reversal of 320032321312 is 213123230023.

It is a super-3 number, since 3×320032321312³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156937 + ... + 815287.

It is an arithmetic number, because the mean of its divisors is an integer number (14330018808).

Almost surely, 2^320032321312 is an apocalyptic number.

320032321312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320032321312 is an abundant number, since it is smaller than the sum of its proper divisors (367808581472).

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

320032321312 is a wasteful number, since it uses less digits than its factorization.

320032321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659753 (or 659745 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 320032321312 its reverse (213123230023), we get a palindrome (533155551335).

The spelling of 320032321312 in words is "three hundred twenty billion, thirty-two million, three hundred twenty-one thousand, three hundred twelve".