Nobody checks that sort of stuff. If they point it out to you, just don't see it. When they start getting frustrated, run through a 5 minute pantomine of reading out the numbers and making the wrong numbers appear 'right' to you because of your dyslexia. If anybody makes anything of it, say 'well if I only had one leg, would you not accept my passport because of it?' and get hysterical. They will hand you your passport. But don't worry about it because nobody cares anyway! As long as it is valid for 6 months with a reasonable piccie of you, that's all.
But whatever you do, don't look nervous or anxious. Hand them that thing while you are reading a paper and picking your teeth with a toothpick. It will distract them and they will be thinking about bollocking you or remonstrating rather than checking anything at the critical moment. I know these tricks, I went to boarding school. The cooler you are, the more successful you will be. But if you ask anybody, they will say 'no!'