Compare 328 vs 331
| Property | 328 | 331 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 23 × 411 | 3311 |
| Prime factorization | 2 × 2 × 2 × 41 | 331 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 4, 8, 41, 82, 164, 328 | 1, 331 |
| Number of properties | 0 | 10 |
| Additive primes | 39th | |
| Cuban primes 1 | 7th | |
| Good primes | 24th | |
| Happy primes | 17th | |
| Harmonic primes | 28th | |
| Isolated primes | 28th | |
| Lucky primes | 19th | |
| Primes | 67th | |
| Sexy primes (1st member) | 37th | |
| Super primes | 19th | |
| Roman numberals | CCCXXVIII | CCCXXXI |
| Base 2 | 1010010002 | 1010010112 |
| Base 3 | 1100113 | 1100213 |
| Base 4 | 110204 | 110234 |
| Base 5 | 23035 | 23115 |
| Base 6 | 13046 | 13116 |
| Base 7 | 6467 | 6527 |
| Base 8 | 5108 | 5138 |
| Base 9 | 4049 | 4079 |
| Base 10 | 32810 | 33110 |
| Base 11 | 27911 | 28111 |
| Base 12 | 23412 | 23712 |
| Base 13 | 1c313 | 1c613 |
| Base 14 | 19614 | 19914 |
| Base 15 | 16d15 | 17115 |
| Base 16 | 14816 | 14b16 |