Numbers / 303

The Number 303

303 is composite: factorization 3 × 101. That gives 303 exactly 4 divisors: 1, 3, 101, 303. 303's proper divisors total just 105, 198 short of 303, the deficient case most of 303's neighbors share too. 303 is also a palindrome, since 303 reads identically forwards and backwards. 303 has a digit sum of 6; for 303, the digital root works out to 6. 303: 3 all divide 303 evenly, out of 2-12. 303 is 100101111 in binary and 12F in hex; as a Roman numeral it's CCCIII.