Properties of the Number -3211

Two Hundred Eleven

Basics

Value: -3212 → -3211 → -3210

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 13 ² × 19

Divisors: 1, 13, 19, 169, 247, 3211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -110010001011

Octal: -6213

Duodecimal: -1A37

Hexadecimal: -c8b

Square: 10310521

Square Root: 56.66568626602876

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

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 473", based on the 5-celled von Neumann neighborhood. A272426

a(n) = 2·a(n-1) + a(n-2) - a(n-3), with a(0) = a(1) = 0, a(2) = 1. A6054

The first Fibonacci based variant of arithmetic derivative: a(p) = A000045(p) for prime p, a(u·v) = a(u)*v + u·a(v), with a(0) = a(1) = 0. A328845

Numbers that are the sum of 9 positive 7th powers. A3376

Generalized 19-gonal (or enneadecagonal) numbers: m*(17·m - 15)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303813

Number of partitions p of n such that (maximal multiplicity over the parts of p) = number of 1s in p. A241131

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

Expansion of e.g.f.: (1/2) - (1/2)*(5 - 4·exp(x))^1/2. A52886

Numbers C from the ABC conjecture. A120498

Numbers of the form 9·h² + 2·h, for h an integer. A132355