Numbers / 113

The Number 113

113 is prime: only 1 and 113 divide it evenly; the next prime after 113 is 127. 113's proper divisors total just 1, 112 short of 113, the deficient case most of 113's neighbors share too. 113 has a digit sum of 5; for 113, the digital root works out to 5. 113 shares no factor with 2-12; 113's own divisors start beyond that range. 113 is 1110001 in binary and 71 in hex; as a Roman numeral it's CXIII.