Names of 13
| Nominal | 13 |
| Cardinal | thirteen |
| Ordinal | 13th |
| This number as US currency | thirteen dollars |
| Is 13 an odd number? | 13 is an odd number |
| Is 13 an even number? | 13 is NOT an even number |
| Is 13 a palindrome? | 13 is NOT a palindrome number |
| Is 13 a triangle number? | 13 is NOT a triangle number |
13 in other Bases
| Base 2 (Binary) | 11012 |
| Base 3 (Ternary) | 1113 |
| Base 4 (Quaternary) | 314 |
| Base 5 (Quinary) | 235 |
| Base 6 (Senary) | 216 |
| Base 8 (Octal) | 158 |
| Base 12 (Duodecimal) | 1112 |
| Base 16 (Hexadecimal) | D16 |
| Base 20 (Vigesimal) | D20 |
Primes and Factors tests for 13
| Is 13 a Prime Number? | 13 is a prime |
| Is 13 a perfect number? | 13 is NOT a perfect number |
| Is 13 a Mersenne Prime? | 13 is NOT a Mersenne prime |
| Is 13 a Fermat Prime? | 13 is NOT a Fermat prime |
| Is 13 a Fibonacci Prime? | 13 is a Fibonacci prime |
| Is 13 a Partition Prime? | 13 is NOT a Partition prime |
| Is 13 a Pell Prime? | 13 is NOT a Pell prime |
| Prime Factors | Prime factors of 13 |
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13 in other Numerals
| 13 in Roman Numeral | XIII |
| 13 in Chinese Numeral | 壹拾叄 |
| 13 in Egyptian Numeral | 𓎆𓏼 |
| 13 in Babylonian Numeral |  |
Roots and stuff for 13
| Is 13 a square number? | 13 is NOT a square number |
| Is 13 a cube number? | 13 is NOT a cube number |
| Square root of the number 13 | 3.605551275464 |
| Cube root of the number 13 | 2.3513346877208 |
Recreational math for 13
| Number 13 reversed | 31 |
| Sum of the digits | 4 |
| No of digits | 2 |