That's 200,000 miles, a milestone if you count in the old units... Build date of Nov 81 means the Katana now 40 years old.
When I wuz a kid in the early seventies, an "old grizzled guy" in a grimy Barbour jacket pulled up on a Vincent to where we were hanging out, super cool and a complete anachronism at the same time. That was an impossibly old bike then- at probably nearly 20 years of age.
Fifty years on, still wearing an old black leather jacket, I is that guy!