3² × 7² × 31

Prime Factor Structure

Factorization String 3^2 × 7^2 × 31

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 23,712

Proper Divisor Sum 10,041

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #13669 ← → #13679

1 3 7 9 21 31 49 63 93 147 217 279 441 651 1,519 1,953 4,557 13,671

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

13,671 41,014 20,507 61,522 30,761 92,284 46,142 23,071 69,214 34,607 103,822 51,911 155,734 77,867 233,602 116,801 350,404 175,202 87,601 262,804 131,402 65,701 197,104 98,552 49,276 24,638 12,319 36,958 18,479 55,438 27,719 83,158 41,579 124,738 62,369 187,108 93,554 46,777 140,332 70,166 35,083 105,250 52,625 157,876 78,938 39,469 118,408 59,204 29,602 14,801 44,404 22,202 11,101 33,304 16,652 8,326 4,163 12,490 6,245 18,736

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