Properties of the Number -4431

Four Hundred Thirty-One

Basics

Value: -4432 → -4431 → -4430

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 211

Divisors: 1, 3, 7, 21, 211, 633, 1477, 4431

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000101001111

Octal: -10517

Duodecimal: -2693

Hexadecimal: -114f

Square: 19633761

Square Root: 66.56575696257048

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

Triangle defined by T(n, m) = -b(n) + b(m) + b(n-m), where b(n) = binomial(2·n, n)/(n + 1) = A000108(n), read by rows. A176602

Generalized 23-gonal (or icositrigonal) numbers: m*(21·m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303303

Numbers m such that there are precisely 7 groups of order m. A249550

a(n) = (n+1)*(n²+n+2)/2; g.f.: (1 + 2·x²) / (1 - x)⁴. A6000

Number of simple graphs g on n nodes with |Aut(g)| = 2. A75095

Positive numbers whose product of digits is four times their sum. A62036

a(1) = 8; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A74344

a(2n) = a(n), a(2n+1) = 10·a(n) + a(n+1). A178243

Sum of the sixth largest parts of the partitions of n into 9 squarefree parts. A326527

Number of integer partitions of n where the parts have greater mean than the distinct parts. A360250