Numbers / 201

The Number 201

201 is composite: factorization 3 × 67. That gives 201 exactly 4 divisors: 1, 3, 67, 201. 201's proper divisors total just 71, 130 short of 201, the deficient case most of 201's neighbors share too. 201 has a digit sum of 3; for 201, the digital root works out to 3. 201: 3 all divide 201 evenly, out of 2-12. 201 is 11001001 in binary and C9 in hex; as a Roman numeral it's CCI.