The number 40431
40431 is a composite number with 4 divisors. Its prime factorisation is 3 × 13477. Divisors (4): 1, 3, 13477, 40431.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40431: a semiprime: 3 × 13477, the product of two primes.
- 2
40431 is composite. Its prime factorisation is
- 3
The divisors add up to 53912; without 40431 itself that is 13481, so 40431 is deficient (13481 is less than 40431). Euler's totient φ(40431) = 26952 numbers up to 40431 share no factor with it.
- 4
The digits of 40431 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 119 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40431 = 3 \times 13477 \]
40431 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 53912 |
| Euler totient φ(n) | 26952 |
| Square | 1634665761 |
| Cube | 66091171382991 |
| Square root | 201.074613 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 119 |
| Scientific notation | 4.0431 × |
40431 in other forms
| Form | Value |
|---|---|
| In words | forty thousand four hundred and thirty-one |
| Binary (base 2) | 1001110111101111 |
| Octal (base 8) | 116757 |
| Hexadecimal (base 16) | 9DEF |
| Base 3 | 2001110110 |
| As time | 40431 seconds = 11 h 13 min 51 s |
Is 40431 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 (40431 ÷ 3 = 13477) | 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 1) | 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 6) | 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 7) | 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 1) | 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 40431 a prime number?
No. 40431 = 3 × 13477, so it is divisible by 3.
What are the factors of 40431?
1, 3, 13477, 40431.
What is 40431 in binary?
1001110111101111 (hexadecimal 9DEF, octal 116757).
What is the square root of 40431?
About 201.0746.
Is 40431 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 40431?
40431 is a semiprime: 3 × 13477, the product of two primes.