Numbers / 347

The Number 347

347 is prime: only 1 and 347 divide it evenly; the next prime after 347 is 349. 347's proper divisors total just 1, 346 short of 347, the deficient case most of 347's neighbors share too. 347 has a digit sum of 14; for 347, the digital root works out to 5. 347 shares no factor with 2-12; 347's own divisors start beyond that range. 347 is 101011011 in binary and 15B in hex; as a Roman numeral it's CCCXLVII.