320332331 has 8 divisors (see below), whose sum is σ = 360726528. Its totient is φ = 281817000.

The previous prime is 320332319. The next prime is 320332349. The reversal of 320332331 is 133233023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320332331 - 2¹⁰ = 320331307 is a prime.

It is a super-2 number, since 2×320332331² = 205225604567787122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320332351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469355 + ... + 470036.

It is an arithmetic number, because the mean of its divisors is an integer number (45090816).

Almost surely, 2^320332331 is an apocalyptic number.

320332331 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

320332331 is a deficient number, since it is larger than the sum of its proper divisors (40394197).

320332331 is a wasteful number, since it uses less digits than its factorization.

320332331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939433.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 320332331 is about 17897.8303433684. The cubic root of 320332331 is about 684.2270792558.

Adding to 320332331 its reverse (133233023), we get a palindrome (453565354).

The spelling of 320332331 in words is "three hundred twenty million, three hundred thirty-two thousand, three hundred thirty-one".