### About the Number 315 (three hundred fifteen)

The number `315` was the smallest number that didn't have a nBAB on 28 April 2016. After this nBAB for `315` was posted, the number 316 was the smallest number without a nBAB.

```MathBabbler Number Analyst (MBNA) output:
=========================================
315 is a natural, whole, integer
315 is odd
315 proper divisors are: 1,3,5,7,9,15,21,35,45,63,105,
315 has 11 proper divisors
315 is deficient (sum of divisors is 309; ratio: 0.980952)
315 is unhappy
315 is not a Squarefree Number: 9,
315 is composite (not prime)
315 has the prime factors: 3*3*5*7 (sum=18)
315 is a 7-smooth number
315 is Arithmetic (A003601)
315 is a Zuckerman number
315 is a nude number
315 in octal is 0473
315 in binary is 100111011 (is evil)
315 nearest square numbers: -26...9 (289...324 [18])
sqrt(315) = 17.7482
ln(315) = 5.75257
log(315) = 2.49831
315 reciprocal is .00317460317460317460317460317460
315! is 6.50763e+651
315 is 100.268 Pi years
315 is 15 score and 15 years
315 written as a Roman numeral is CCCXV
315 is 158^2 - 157^2 and 158 + 157 = 315
315 is a multiple of 1 & it contains a 1 (A011531)
315 is a multiple of 3 & it contains a 3 (A121023)
315 is a multiple of 5 & it contains a 5 (A121025)
315 is a multiple of 15 & it contains a 15 (A121035)
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 28 April 2016