3,581,001

3² × 103 × 3863

3,581,001 has digital root 9. The neighboring primes are 3580963 and 3581003; its proper-divisor sum differs from the starting integer by -1,937,874.

Prime Factor Structure

Factorization String 3^2 × 103 × 3863

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 12

Divisor Sum (σ) 5,224,128

Proper Divisor Sum 1,643,127

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #3580963 ← → #3581003

1 3 9 103 309 927 3,863 11,589 34,767 397,889 1,193,667 3,581,001

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

3,581,001 10,743,004 5,371,502 2,685,751 8,057,254 4,028,627 12,085,882 6,042,941 18,128,824 9,064,412 4,532,206 2,266,103 6,798,310 3,399,155 10,197,466 5,098,733 15,296,200 7,648,100 3,824,050 1,912,025 5,736,076 2,868,038 1,434,019 4,302,058 2,151,029 6,453,088 3,226,544 1,613,272 806,636 403,318 201,659 604,978 302,489 907,468 453,734 226,867 680,602 340,301 1,020,904 510,452 255,226 127,613 382,840 191,420 95,710 47,855 143,566 71,783 215,350 107,675 323,026 161,513 484,540 242,270 121,135 363,406 181,703 545,110 272,555 817,666