320351332 has 48 divisors (see below), whose sum is σ = 683036928. Its totient is φ = 128332800.

The previous prime is 320351323. The next prime is 320351351. The reversal of 320351332 is 233153023.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 69648 + ... + 74104.

It is an arithmetic number, because the mean of its divisors is an integer number (14229936).

Almost surely, 2^320351332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320351332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341518464).

320351332 is an abundant number, since it is smaller than the sum of its proper divisors (362685596).

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

320351332 is a wasteful number, since it uses less digits than its factorization.

320351332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636 (or 4634 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 320351332 is about 17898.3611540275. The cubic root of 320351332 is about 684.2406076454.

The spelling of 320351332 in words is "three hundred twenty million, three hundred fifty-one thousand, three hundred thirty-two".