31 × 20807

Prime Factor Structure

Factorization String 31 × 20807

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 665,856

Proper Divisor Sum 20,839

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #645013 ← → #645019

1 31 20,807 645,017

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

645,017 1,935,052 967,526 483,763 1,451,290 725,645 2,176,936 1,088,468 544,234 272,117 816,352 408,176 204,088 102,044 51,022 25,511 76,534 38,267 114,802 57,401 172,204 86,102 43,051 129,154 64,577 193,732 96,866 48,433 145,300 72,650 36,325 108,976 54,488 27,244 13,622 6,811 20,434 10,217 30,652 15,326 7,663 22,990 11,495 34,486 17,243 51,730 25,865 77,596 38,798 19,399 58,198 29,099 87,298 43,649 130,948 65,474 32,737 98,212 49,106 24,553

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