331 × 1987

Prime Factor Structure

Factorization String 331 × 1987

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 660,016

Proper Divisor Sum 2,319

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #657661 ← → #657703

1 331 1,987 657,697

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

657,697 1,973,092 986,546 493,273 1,479,820 739,910 369,955 1,109,866 554,933 1,664,800 832,400 416,200 208,100 104,050 52,025 156,076 78,038 39,019 117,058 58,529 175,588 87,794 43,897 131,692 65,846 32,923 98,770 49,385 148,156 74,078 37,039 111,118 55,559 166,678 83,339 250,018 125,009 375,028 187,514 93,757 281,272 140,636 70,318 35,159 105,478 52,739 158,218 79,109 237,328 118,664 59,332 29,666 14,833 44,500 22,250 11,125 33,376 16,688 8,344 4,172

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