3 × 7 × 19 × 31

Prime Factor Structure

Factorization String 3 × 7 × 19 × 31

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 20,480

Proper Divisor Sum 8,111

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #12347 ← → #12373

1 3 7 19 21 31 57 93 133 217 399 589 651 1,767 4,123 12,369

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

12,369 37,108 18,554 9,277 27,832 13,916 6,958 3,479 10,438 5,219 15,658 7,829 23,488 11,744 5,872 2,936 1,468 734 367 1,102 551 1,654 827 2,482 1,241 3,724 1,862 931 2,794 1,397 4,192 2,096 1,048 524 262 131 394 197 592 296 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16

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