31 × 21391

Prime Factor Structure

Factorization String 31 × 21391

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 684,544

Proper Divisor Sum 21,423

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #663097 ← → #663127

1 31 21,391 663,121

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

663,121 1,989,364 994,682 497,341 1,492,024 746,012 373,006 186,503 559,510 279,755 839,266 419,633 1,258,900 629,450 314,725 944,176 472,088 236,044 118,022 59,011 177,034 88,517 265,552 132,776 66,388 33,194 16,597 49,792 24,896 12,448 6,224 3,112 1,556 778 389 1,168 584 292 146 73 220 110 55 166 83 250 125 376 188 94 47 142 71 214 107 322 161 484 242 121

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