Properties of the Number -211117

Two Hundred Eleven Thousand One Hundred Seventeen

Basics

Value: -211118 → -211117 → -211116

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 23 × 67 × 137

Divisors: 1, 23, 67, 137, 1541, 3151, 9179, 211117

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011100010101101

Octal: -634255

Duodecimal: -A2211

Hexadecimal: -338ad

Square: 44570387689

Square Root: 459.474700065194

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

a(n) = ∑_k=0..n C(n-k, floor(k/2)). A97333

Expansion of (1+x)(1+x²)/(1-x-x³). A3410

Expansion of (1 - x²)/(1 - x - x³). A58278

a(0) = 1, a(1) = 2, a(2) = 5; for n >= 3, a(n) = a(n-1) + 2·a(n-2) + a(n-3). A101399

Positions of the positive integers in the ordering of rational numbers as generated by the rules: 1 is in S, and if nonzero·is in S, then x+1 and -1/x are in S. (See Comments.) A226136

Positions of the integers in the ordering of rational numbers as generated by the rules: 1 is in S, and if nonzero·is in S, then x+1 and -1/x are in S. (See Comments.) A226137

Quasi-Carmichael numbers to base -3: squarefree composites n such that for every prime p that divides n, p+3 divides n+3. A29563

a(n) = a(n-3) + 2·a(n-6) + a(n-9). A109533

Number of new rationals produced at the n-th iteration by applying the map t -> {t+1, -1/t} to nonzero terms, starting with S[0] = {1}. A226275

Positive integers k such that k divides 17^k + 2. A333414