Q: What is the negative version of the number 31,809,170?
A: -31,809,170
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 31,809,168 | 31,809,169 | 31,809,171 | 31,809,172 |
| -31,809,168 | -31,809,169 | -31,809,171 | -31,809,172 |