13 × 31391

Prime Factor Structure

Factorization String 13 × 31391

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 439,488

Proper Divisor Sum 31,405

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #408077 ← → #408091

1 13 31,391 408,083

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

408,083 1,224,250 612,125 1,836,376 918,188 459,094 229,547 688,642 344,321 1,032,964 516,482 258,241 774,724 387,362 193,681 581,044 290,522 145,261 435,784 217,892 108,946 54,473 163,420 81,710 40,855 122,566 61,283 183,850 91,925 275,776 137,888 68,944 34,472 17,236 8,618 4,309 12,928 6,464 3,232 1,616 808 404 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13

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