Names of 243
| Nominal | 243 |
| Cardinal | two hundred forty-three |
| Ordinal | 243rd |
| This number as US currency | two hundred forty-three dollars |
| Is 243 an odd number? | 243 is an odd number |
| Is 243 an even number? | 243 is NOT an even number |
| Is 243 a palindrome? | 243 is NOT a palindrome number |
| Is 243 a triangle number? | 243 is NOT a triangle number |
243 in other Bases
| Base 2 (Binary) | 111100112 |
| Base 3 (Ternary) | 1000003 |
| Base 4 (Quaternary) | 33034 |
| Base 5 (Quinary) | 14335 |
| Base 6 (Senary) | 10436 |
| Base 8 (Octal) | 3638 |
| Base 12 (Duodecimal) | 18312 |
| Base 16 (Hexadecimal) | F316 |
| Base 20 (Vigesimal) | C320 |
Primes and Factors tests for 243
| Is 243 a Prime Number? | 243 is NOT a prime |
| Is 243 a perfect number? | 243 is NOT a perfect number |
| Is 243 a Mersenne Prime? | 243 is NOT a Mersenne prime |
| Is 243 a Fermat Prime? | 243 is NOT a Fermat prime |
| Is 243 a Fibonacci Prime? | 243 is NOT a Fibonacci prime |
| Is 243 a Partition Prime? | 243 is NOT a Partition prime |
| Is 243 a Pell Prime? | 243 is NOT a Pell prime |
| Prime Factors | Prime factors of 243 |
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243 in other Numerals
| 243 in Roman Numeral | CCXLIII |
| 243 in Chinese Numeral | 貳佰肆拾叄 |
| 243 in Egyptian Numeral | 𓍣𓎉𓏼 |
| 243 in Babylonian Numeral |   |
Roots and stuff for 243
| Is 243 a square number? | 243 is NOT a square number |
| Is 243 a cube number? | 243 is NOT a cube number |
| Square root of the number 243 | 15.58845726812 |
| Cube root of the number 243 | 6.2402514691557 |
Recreational math for 243
| Number 243 reversed | 342 |
| Sum of the digits | 9 |
| No of digits | 3 |