3² × 7² × 311

Prime Factor Structure

Factorization String 3^2 × 7^2 × 311

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 231,192

Proper Divisor Sum 94,041

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #137147 ← → #137153

1 3 7 9 21 49 63 147 311 441 933 2,177 2,799 6,531 15,239 19,593 45,717 137,151

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

137,151 411,454 205,727 617,182 308,591 925,774 462,887 1,388,662 694,331 2,082,994 1,041,497 3,124,492 1,562,246 781,123 2,343,370 1,171,685 3,515,056 1,757,528 878,764 439,382 219,691 659,074 329,537 988,612 494,306 247,153 741,460 370,730 185,365 556,096 278,048 139,024 69,512 34,756 17,378 8,689 26,068 13,034 6,517 19,552 9,776 4,888 2,444 1,222 611 1,834 917 2,752 1,376 688 344 172 86 43 130 65 196 98 49 148

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