133,237

13 × 37 × 277

133,237 has digital root 1. The neighboring primes are 133213 and 133241; its proper-divisor sum differs from the starting integer by -118,578.

Prime Factor Structure

Factorization String 13 × 37 × 277

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 8

Divisor Sum (σ) 147,896

Proper Divisor Sum 14,659

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #133213 ← → #133241

1 13 37 277 481 3,601 10,249 133,237

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

133,237 399,712 199,856 99,928 49,964 24,982 12,491 37,474 18,737 56,212 28,106 14,053 42,160 21,080 10,540 5,270 2,635 7,906 3,953 11,860 5,930 2,965 8,896 4,448 2,224 1,112 556 278 139 418 209 628 314 157 472 236 118 59 178 89 268 134 67 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26

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