331120321 has 8 divisors (see below), whose sum is σ = 379051520. Its totient is φ = 283346208.

The previous prime is 331120313. The next prime is 331120327. The reversal of 331120321 is 123021133.

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 331120321 - 2³ = 331120313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331120295 and 331120304.

It is not an unprimeable number, because it can be changed into a prime (331120327) by changing a digit.

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, 34716 + ... + 43213.

It is an arithmetic number, because the mean of its divisors is an integer number (47381440).

Almost surely, 2^331120321 is an apocalyptic number.

It is an amenable number.

331120321 is a deficient number, since it is larger than the sum of its proper divisors (47931199).

331120321 is an equidigital number, since it uses as much as digits as its factorization.

331120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78543.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331120321 is about 18196.7118183478. The cubic root of 331120321 is about 691.8234490350.

Adding to 331120321 its reverse (123021133), we get a palindrome (454141454).

It can be divided in two parts, 3311 and 20321, that added together give a palindrome (23632).

The spelling of 331120321 in words is "three hundred thirty-one million, one hundred twenty thousand, three hundred twenty-one".