3² × 61 × 389

Prime Factor Structure

Factorization String 3^2 × 61 × 389

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 314,340

Proper Divisor Sum 100,779

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #213557 ← → #213589

1 3 9 61 183 389 549 1,167 3,501 23,729 71,187 213,561

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

213,561 640,684 320,342 160,171 480,514 240,257 720,772 360,386 180,193 540,580 270,290 135,145 405,436 202,718 101,359 304,078 152,039 456,118 228,059 684,178 342,089 1,026,268 513,134 256,567 769,702 384,851 1,154,554 577,277 1,731,832 865,916 432,958 216,479 649,438 324,719 974,158 487,079 1,461,238 730,619 2,191,858 1,095,929 3,287,788 1,643,894 821,947 2,465,842 1,232,921 3,698,764 1,849,382 924,691 2,774,074 1,387,037 4,161,112 2,080,556 1,040,278 520,139 1,560,418 780,209 2,340,628 1,170,314 585,157 1,755,472

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