Properties of the Number 3281

Three Thousand Two Hundred Eighty-One

Basics

Value: 3280 → 3281 → 3282

Parity: odd

Prime: No

Previous Prime: 3271

Next Prime: 3299

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 17 × 193

Divisors: 1, 17, 193, 3281

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011010001

Octal: 6321

Duodecimal: 1A95

Hexadecimal: cd1

Square: 10764961

Square Root: 57.28001396647874

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: Yes

Fermat Number: No

Cullen Number: No

OEIS Sequences

Centered square numbers: a(n) = 2·n*(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z=Y+1) ordered by increasing Z; then sequence gives Z values. A1844

a(n) = (3ⁿ + 1)/2. A7051

Octahedral numbers: a(n) = n*(2·n² + 1)/3. A5900

a(n) = 2·a(n-1) + 3·a(n-2), a(0) = a(1) = 1. A46717

Number of compositions of n into pairwise relatively prime parts. A101268

a(n) = (2·n - 1)*(8·n² - 8·n + 3)/3. A63496

Pseudoprimes to base 3. A5935

Expansion of (1+x²)/((1-x)²*(1-x²)²). A5993

Sums of distinct powers of 5. A33042

Array read by antidiagonals downwards: T(b,n) = number of words of length n over an alphabet of size b that are in standard order. A278984