21,877

131 × 167

Prime Factor Structure

Factorization String 131 × 167

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Total Divisors 4

Divisor Sum (σ) 22,176

Proper Divisor Sum 299

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #21871 ← → #21881

1 131 167 21,877

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

21,877 65,632 32,816 16,408 8,204 4,102 2,051 6,154 3,077 9,232 4,616 2,308 1,154 577 1,732 866 433 1,300 650 325 976 488 244 122 61 184 92 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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