13² × 31 × 131

Prime Factor Structure

Factorization String 13^2 × 31 × 131

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 772,992

Proper Divisor Sum 86,683

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #686293 ← → #686317

1 13 31 131 169 403 1,703 4,061 5,239 22,139 52,793 686,309

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

686,309 2,058,928 1,029,464 514,732 257,366 128,683 386,050 193,025 579,076 289,538 144,769 434,308 217,154 108,577 325,732 162,866 81,433 244,300 122,150 61,075 183,226 91,613 274,840 137,420 68,710 34,355 103,066 51,533 154,600 77,300 38,650 19,325 57,976 28,988 14,494 7,247 21,742 10,871 32,614 16,307 48,922 24,461 73,384 36,692 18,346 9,173 27,520 13,760 6,880 3,440 1,720 860 430 215 646 323 970 485 1,456 728

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