343 (three hundred [and] forty three) is the natural number following 342 and preceding 344.
In mathematics 343 factorization is 73 (7 × 7 × 7) meaning it is a cubic number. It is also a powerful number, and an economical number.
343 is the first nice Friedman number that is composite since 343 = (3 + 4)3. It is the only known example of x2+x+1 = y3, in this case, x=18, y=7. It is z3 in a triplet (x,y,z) such that x5 + y2 = z3. It is also a strong Friedman number.
Since 343 reversed is 343, it is a palindrome number. Since it is also an economical number, it is the smallest economical palindrome.
In other fields On September 11, 2001, By 10:28 a.m. (ET), the South Tower and North Tower of the World Trade Center in New York collapsed. Because of that, a total of 343 New York City firefighters died from the emergency.
The Woodside Cotton Mill Village Historic District contains a total of 343 surviving mill houses.
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