21031

Prime Factor Structure

Factorization String 21031

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,032

Proper Divisor Sum 1

Digit Sum / Digital Root 7 (Root: 7)

Adjacent Primes #21023 ← → #21059

1 21,031

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

21,031 63,094 31,547 94,642 47,321 141,964 70,982 35,491 106,474 53,237 159,712 79,856 39,928 19,964 9,982 4,991 14,974 7,487 22,462 11,231 33,694 16,847 50,542 25,271 75,814 37,907 113,722 56,861 170,584 85,292 42,646 21,323 63,970 31,985 95,956 47,978 23,989 71,968 35,984 17,992 8,996 4,498 2,249 6,748 3,374 1,687 5,062 2,531 7,594 3,797 11,392 5,696 2,848 1,424 712 356 178 89 268 134

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