31 × 20857

Prime Factor Structure

Factorization String 31 × 20857

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 667,456

Proper Divisor Sum 20,889

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #646549 ← → #646571

1 31 20,857 646,567

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

646,567 1,939,702 969,851 2,909,554 1,454,777 4,364,332 2,182,166 1,091,083 3,273,250 1,636,625 4,909,876 2,454,938 1,227,469 3,682,408 1,841,204 920,602 460,301 1,380,904 690,452 345,226 172,613 517,840 258,920 129,460 64,730 32,365 97,096 48,548 24,274 12,137 36,412 18,206 9,103 27,310 13,655 40,966 20,483 61,450 30,725 92,176 46,088 23,044 11,522 5,761 17,284 8,642 4,321 12,964 6,482 3,241 9,724 4,862 2,431 7,294 3,647 10,942 5,471 16,414 8,207 24,622

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