The number 1227
1227 is a composite number with 4 divisors. Its prime factorisation is 3 × 409. Divisors (4): 1, 3, 409, 1227.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 1227: a semiprime: 3 × 409, the product of two primes.
- 2
1227 is composite. Its prime factorisation is
- 3
The divisors add up to 1640; without 1227 itself that is 413, so 1227 is deficient (413 is less than 1227). Euler's totient φ(1227) = 816 numbers up to 1227 share no factor with it.
- 4
The digits of 1227 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 132 steps to reach 1.
LaTeX source of the formulas on this page
\[ 1227 = 3 \times 409 \]
1227 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 1640 |
| Euler totient φ(n) | 816 |
| Square | 1505529 |
| Cube | 1847284083 |
| Square root | 35.028560 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 132 |
| Scientific notation | 1.227 × |
1227 in other forms
| Form | Value |
|---|---|
| In words | one thousand two hundred and twenty-seven |
| Roman numerals | MCCXXVII |
| Binary (base 2) | 10011001011 |
| Octal (base 8) | 2313 |
| Hexadecimal (base 16) | 4CB |
| Base 3 | 1200110 |
| As time | 1227 seconds = 20 min 27 s |
Is 1227 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (1227 ÷ 3 = 409) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 1227 a prime number?
No. 1227 = 3 × 409, so it is divisible by 3.
What are the factors of 1227?
1, 3, 409, 1227.
What is 1227 in binary?
10011001011 (hexadecimal 4CB, octal 2313).
What is the square root of 1227?
About 35.0286.
What is 1227 in Roman numerals?
MCCXXVII.
Is 1227 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 1227?
1227 is a semiprime: 3 × 409, the product of two primes.