31 × 641

Prime Factor Structure

Factorization String 31 × 641

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 20,544

Proper Divisor Sum 673

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #19867 ← → #19889

1 31 641 19,871

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

19,871 59,614 29,807 89,422 44,711 134,134 67,067 201,202 100,601 301,804 150,902 75,451 226,354 113,177 339,532 169,766 84,883 254,650 127,325 381,976 190,988 95,494 47,747 143,242 71,621 214,864 107,432 53,716 26,858 13,429 40,288 20,144 10,072 5,036 2,518 1,259 3,778 1,889 5,668 2,834 1,417 4,252 2,126 1,063 3,190 1,595 4,786 2,393 7,180 3,590 1,795 5,386 2,693 8,080 4,040 2,020 1,010 505 1,516 758

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