The number 80431
80431 is a composite number with 8 divisors. Its prime factorisation is 13 × 23 × 269. Divisors (8): 1, 13, 23, 269, 299, 3497, 6187, 80431.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80431 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80431 is composite. Its prime factorisation is
- 3
The divisors add up to 90720; without 80431 itself that is 10289, so 80431 is deficient (10289 is less than 80431). Euler's totient φ(80431) = 70752 numbers up to 80431 share no factor with it.
- 4
The digits of 80431 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80431 = 13 \times 23 \times 269 \]
80431 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 90720 |
| Euler totient φ(n) | 70752 |
| Square | 6469145761 |
| Cube | 520319862702991 |
| Square root | 283.603597 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 94 |
| Scientific notation | 8.0431 × |
80431 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand four hundred and thirty-one |
| Binary (base 2) | 10011101000101111 |
| Octal (base 8) | 235057 |
| Hexadecimal (base 16) | 13A2F |
| Base 3 | 11002022221 |
| As time | 80431 seconds = 22 h 20 min 31 s |
Is 80431 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 7) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80431 a prime number?
No. 80431 = 13 × 23 × 269, so it is divisible by 13.
What are the factors of 80431?
1, 13, 23, 269, 299, 3497, 6187, 80431.
What is 80431 in binary?
10011101000101111 (hexadecimal 13A2F, octal 235057).
What is the square root of 80431?
About 283.6036.
Is 80431 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 80431?
It is a composite number with 8 divisors.