3² × 5 × 13 × 19²

Prime Factor Structure

Factorization String 3^2 × 5 × 13 × 19^2

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 416,052

Proper Divisor Sum 204,867

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #211177 ← → #211187

1 3 5 9 13 15 19 39 45 57 65 95 117 171 195 247 285 361 585 741 855 1,083 1,235 1,805 2,223 3,249 3,705 4,693 5,415 11,115 14,079 16,245 23,465 42,237 70,395 211,185

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

211,185 633,556 316,778 158,389 475,168 237,584 118,792 59,396 29,698 14,849 44,548 22,274 11,137 33,412 16,706 8,353 25,060 12,530 6,265 18,796 9,398 4,699 14,098 7,049 21,148 10,574 5,287 15,862 7,931 23,794 11,897 35,692 17,846 8,923 26,770 13,385 40,156 20,078 10,039 30,118 15,059 45,178 22,589 67,768 33,884 16,942 8,471 25,414 12,707 38,122 19,061 57,184 28,592 14,296 7,148 3,574 1,787 5,362 2,681 8,044

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