About the Number 331 (three hundred thirty-one)

This nBAB for the number 331 was created because 331 was the smallest number that didn't have a nBAB on 5 May 2016. After the posting of this nBAB, 332 became the smallest number without a nBAB.

Note: MathBabbler decided on 3 May 2016 that he wanted all numbers less than 350 to have nBABs by the end of the Spring 2016 Semester BABbling session.

MathBabbler Number Analyst (MBNA) output:
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331 is a natural, whole, integer
331 is odd
331 proper divisors are: 1,
331 has 1 proper divisors
331 is deficient (sum of divisors is 1; ratio: 0.00302115)
331 is happy
331 is a Squarefree Number
331 is prime (not composite)
...Sexy prime with 337
...Sexy Quadruple prime with 319, 325, 337
...OEIS:002145 (4n+3; n=82)
...Super (prime# 67)
...Left-truncatable
331 is a lucky number
331 is Arithmetic (A003601)
331 is the sum of 5 consecutive primes
331 = 59 + 61 + 67 + 71 + 73
331 in octal is 0513
331 in hexadecimal is 0x14b
331 in binary is 101001011 (is odious)
331 nearest square numbers: -7...30 (324...361 [19])
sqrt(331) = 18.1934
ln(331) = 5.80212
log(331) = 2.51983
331 reciprocal is .00302114803625377643504531722054
331! is 9.34772e+691
331 is 105.361 Pi years
331 is 16 score and 11 years
331 written as a Roman numeral is CCCXXXI
331 is 166^2 - 165^2 and 166 + 165 = 331
331 is a multiple of 1 & it contains a 1 (A011531)

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 05 May 2016

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This work is licensed under a Creative Commons Attribution 3.0 United States License.