The number 43361
43361 is a composite number with 4 divisors. Its prime factorisation is 131 × 331. Divisors (4): 1, 131, 331, 43361.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 43361: a semiprime: 131 × 331, the product of two primes.
- 2
43361 is composite. Its prime factorisation is
- 3
The divisors add up to 43824; without 43361 itself that is 463, so 43361 is deficient (463 is less than 43361). Euler's totient φ(43361) = 42900 numbers up to 43361 share no factor with it.
- 4
The digits of 43361 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 70 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43361 = 131 \times 331 \]
43361 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43824 |
| Euler totient φ(n) | 42900 |
| Square | 1880176321 |
| Cube | 81526325454881 |
| Square root | 208.233043 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 70 |
| Scientific notation | 4.3361 × |
43361 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand three hundred and sixty-one |
| Binary (base 2) | 1010100101100001 |
| Octal (base 8) | 124541 |
| Hexadecimal (base 16) | A961 |
| Base 3 | 2012110222 |
| As time | 43361 seconds = 12 h 2 min 41 s |
Is 43361 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 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 43361 a prime number?
No. 43361 = 131 × 331, so it is divisible by 131.
What are the factors of 43361?
1, 131, 331, 43361.
What is 43361 in binary?
1010100101100001 (hexadecimal A961, octal 124541).
What is the square root of 43361?
About 208.2330.
Is 43361 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 43361?
43361 is a semiprime: 131 × 331, the product of two primes.