3³ × 7 × 31 × 37

Prime Factor Structure

Factorization String 3^3 × 7 × 31 × 37

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 389,120

Proper Divisor Sum 172,337

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #216781 ← → #216787

1 3 7 9 21 27 31 37 63 93 111 189 217 259 279 333 651 777 837 999 1,147 1,953 2,331 3,441 5,859 6,993 8,029 10,323 24,087 30,969 72,261 216,783

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

216,783 650,350 325,175 975,526 487,763 1,463,290 731,645 2,194,936 1,097,468 548,734 274,367 823,102 411,551 1,234,654 617,327 1,851,982 925,991 2,777,974 1,388,987 4,166,962 2,083,481 6,250,444 3,125,222 1,562,611 4,687,834 2,343,917 7,031,752 3,515,876 1,757,938 878,969 2,636,908 1,318,454 659,227 1,977,682 988,841 2,966,524 1,483,262 741,631 2,224,894 1,112,447 3,337,342 1,668,671 5,006,014 2,503,007 7,509,022 3,754,511 11,263,534 5,631,767 16,895,302 8,447,651 25,342,954 12,671,477 38,014,432 19,007,216 9,503,608 4,751,804 2,375,902 1,187,951 3,563,854 1,781,927

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.