Q: What is the negative version of the number 31,405,221?
A: -31,405,221
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:
| 31,405,219 | 31,405,220 | 31,405,222 | 31,405,223 |
| -31,405,219 | -31,405,220 | -31,405,222 | -31,405,223 |