Properties of the Number -1311

Three Hundred Eleven

Basics

Value: -1312 → -1311 → -1310

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 3 × 19 × 23

Divisors: 1, 3, 19, 23, 57, 69, 437, 1311

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100011111

Octal: -2437

Duodecimal: -913

Hexadecimal: -51f

Square: 1718721

Square Root: 36.207733980463345

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

G.f.: ∑_n=-oo..+oo x^n*(n+1/2) * C(x)^2·n-1, where C(x) = 1 + x·C(x)² is the g.f. of the Catalan numbers (A000108). A355345

Expansion of e.g.f. log(1+tanh(x))/exp(x). A9393

Expansion of A(x) satisfying A(A(x)) = x+2x²+4x³. A220110

Coefficient table for the minimal polynomials of s(2·l+1)² = (2·sin(π/(2·l+1)))². A232632

Expansion of ∏_m>=1 (1+m·q^m)^-23. A22715

Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial ∑_{k=0..infinity} (2·k+1)ⁿ*binomial(x,k) / 2^x. A176668

Expansion of e.g.f. sin(tan(x)+arcsin(x)) (odd powers only). A12949

Integers written in factorial base. A7623

Number of integer partitions of n with distinct differences between successive parts. A325325

n written in primorial base. A49345