Numbers / 203
The Number 203
203 is composite: factorization 7 × 29. That gives 203 exactly 4 divisors: 1, 7, 29, 203. 203's proper divisors total just 37, 166 short of 203, the deficient case most of 203's neighbors share too. 203 has a digit sum of 5; for 203, the digital root works out to 5. 203: 7 all divide 203 evenly, out of 2-12. 203 is 11001011 in binary and CB in hex; as a Roman numeral it's CCIII.