| ||||
|---|---|---|---|---|
| Cardinal | three | |||
| Ordinal | 3rd (third) | |||
| Numeral system | ternary | |||
| Factorization | prime | |||
| Prime | 2nd | |||
| Divisors | 1, 3 | |||
| Greek numeral | Γ´ | |||
| Roman numeral | III, iii | |||
| Greek prefix | tri- | |||
| Latin prefix | tre-/ter- | |||
| Binary | 112 | |||
| Ternary | 103 | |||
| Senary | 36 | |||
| Octal | 38 | |||
| Duodecimal | 312 | |||
| Hexadecimal | 316 | |||
| Arabic, Kurdish, Persian, Sindhi, Urdu | ٣ | |||
| Bengali, Assamese | ৩ | |||
| Chinese | 三，弎，叄 | |||
| Devanāgarī | ३ | |||
| Ge'ez | ፫ | |||
| Greek | γ (or Γ) | |||
| Hebrew | ג | |||
| Japanese | 三/参 | |||
| Khmer | ៣ | |||
| Armenian | Գ | |||
| Malayalam | ൩ | |||
| Tamil | ௩ | |||
| Telugu | ౩ | |||
| Kannada | ೩ | |||
| Thai | ๓ | |||
| N'Ko | ߃ | |||
| Lao | ໓ | |||
| Georgian | Ⴂ/ⴂ/გ (Gani) | |||
| Babylonian numeral | 𒐗 | |||
| Maya numerals | ••• | |||
| Morse code | ... _ _ | |||
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious and cultural significance in many societies.