631,809

3² × 70201

Starting at 631,809, the Collatz iteration reaches 1 after 102 steps. The first transition is 1895428; the starting value is odd with 6 positive divisors.

Prime Factor Structure

Factorization String 3^2 × 70201

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 912,626

Proper Divisor Sum 280,817

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #631789 ← → #631817

Radix Representation

Decimal	631809
Binary	10011010010000000001 (20 bits)
Octal	0o2322001
Hexadecimal	0x9A401

Divisor Catalog (6)

1 3 9 70,201 210,603 631,809

Collatz Trajectory (102 steps to reach 1)

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

631,809 1,895,428 947,714 473,857 1,421,572 710,786 355,393 1,066,180 533,090 266,545 799,636 399,818 199,909 599,728 299,864 149,932 74,966 37,483 112,450 56,225 168,676 84,338 42,169 126,508 63,254 31,627 94,882 47,441 142,324 71,162 35,581 106,744 53,372 26,686 13,343 40,030 20,015 60,046 30,023 90,070 45,035 135,106 67,553 202,660 101,330 50,665 151,996 75,998 37,999 113,998 56,999 170,998 85,499 256,498 128,249 384,748 192,374 96,187 288,562 144,281

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