Properties of the Number 3321

Three Thousand Three Hundred Twenty-One

Basics

Value: 3320 → 3321 → 3322

Parity: odd

Prime: No

Previous Prime: 3319

Next Prime: 3323

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 41

Divisors: 1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110011111001

Octal: 6371

Duodecimal: 1B09

Hexadecimal: cf9

Square: 11029041

Square Root: 57.62811813689564

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: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Hexagonal numbers: a(n) = n*(2·n-1). A384

a(n) = n²*(n² + 1)/2. A37270

Array read by descending antidiagonals: T(n,k) is the number of unoriented strings with n beads of k or fewer colors. A277504

a(n) = (2·n+1)*(4·n+1). A14634

Sum of first n semiprimes. A62198

Number of compositions of n into divisors of n. A100346

Staggered diagonal of triangular spiral in A051682. A81266

Expansion of Jacobi θ constant theta₂⁶ /(64q^3/2). A8440

Roman numerals written using 1 for I, 2 for V, 3 for X, 4 for L, 5 for C, 6 for D, 7 for M. A61493

Numbers k such that the centered cube number k³ + (k+1)³ is equal to at least one other sum of two cubes. A352134