Numbers / 343

The Number 343

343 is composite: factorization 7^3. That gives 343 exactly 4 divisors: 1, 7, 49, 343. 343's proper divisors total just 57, 286 short of 343, the deficient case most of 343's neighbors share too. 343 also carries: a perfect cube, since 7³ = 343; and a palindrome, since 343 reads identically forwards and backwards. 343 has a digit sum of 10; for 343, the digital root works out to 1. 343: 7 all divide 343 evenly, out of 2-12. 343 is 101010111 in binary and 157 in hex; as a Roman numeral it's CCCXLIII.