Names of 3
| Nominal | 3 |
| Cardinal | three |
| Ordinal | 3rd |
| This number as US currency | three dollars |
| Is 3 an odd number? | 3 is an odd number |
| Is 3 an even number? | 3 is NOT an even number |
| Is 3 a palindrome? | 3 is a palindrome number |
| Is 3 a triangle number? | 3 is a triangle number |
| Factorial (n!) of number 3! | 6 |
3 in other Bases
| Base 2 (Binary) | 112 |
| Base 3 (Ternary) | 103 |
| Base 4 (Quaternary) | 34 |
| Base 5 (Quinary) | 35 |
| Base 6 (Senary) | 36 |
| Base 8 (Octal) | 38 |
| Base 12 (Duodecimal) | 312 |
| Base 16 (Hexadecimal) | 316 |
| Base 20 (Vigesimal) | 320 |
Primes and Factors tests for 3
| Is 3 a Prime Number? | 3 is a prime |
| Is 3 a perfect number? | 3 is NOT a perfect number |
| Is 3 a Mersenne Prime? | 3 is a Mersenne prime |
| Is 3 a Fermat Prime? | 3 is a Fermat prime |
| Is 3 a Fibonacci Prime? | 3 is a Fibonacci prime |
| Is 3 a Partition Prime? | 3 is a Partition prime |
| Is 3 a Pell Prime? | 3 is NOT a Pell prime |
| Prime Factors | Prime factors of 3 |
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3 in other Numerals
| 3 in Roman Numeral | III |
| 3 in Chinese Numeral | 叄 |
| 3 in Egyptian Numeral | 𓏼 |
| 3 in Babylonian Numeral |  |
Roots and stuff for 3
| Is 3 a square number? | 3 is NOT a square number |
| Is 3 a cube number? | 3 is NOT a cube number |
| Square root of the number 3 | 1.7320508075689 |
| Cube root of the number 3 | 1.4422495703074 |
Recreational math for 3
| Number 3 reversed | 3 |
| Sum of the digits | 3 |
| No of digits | 1 |