3² × 19 × 29 × 43

Prime Factor Structure

Factorization String 3^2 × 19 × 29 × 43

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 343,200

Proper Divisor Sum 129,963

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #213229 ← → #213247

1 3 9 19 29 43 57 87 129 171 261 387 551 817 1,247 1,653 2,451 3,741 4,959 7,353 11,223 23,693 71,079 213,237

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

213,237 639,712 319,856 159,928 79,964 39,982 19,991 59,974 29,987 89,962 44,981 134,944 67,472 33,736 16,868 8,434 4,217 12,652 6,326 3,163 9,490 4,745 14,236 7,118 3,559 10,678 5,339 16,018 8,009 24,028 12,014 6,007 18,022 9,011 27,034 13,517 40,552 20,276 10,138 5,069 15,208 7,604 3,802 1,901 5,704 2,852 1,426 713 2,140 1,070 535 1,606 803 2,410 1,205 3,616 1,808 904 452 226

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