Properties of the Number 40731

Forty Thousand Seven Hundred Thirty-One

Basics

Value: 40730 → 40731 → 40732

Parity: odd

Prime: No

Previous Prime: 40709

Next Prime: 40739

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 13577

Divisors: 1, 3, 13577, 40731

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001111100011011

Octal: 117433

Duodecimal: 1B6A3

Hexadecimal: 9f1b

Square: 1659014361

Square Root: 201.8192260415246

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 P, read by rows, where column k of P³ equals column 0 of P^3k+3 such that column 0 of P³ equals column 0 of P shift one row up, with P(0,0)=1. A136220

Column 2 of triangle A136220; also equals column 0 of U³ = A136236 where U = A136228. A136223

Matrix cube of triangle U = A136228, read by rows. A136236

a(n) = a(n-1) + a(n-2) + a(n-3). A7486

a(n+1) = ∑_{k=0..floor(3·n/4)} a(k) * a(n-k). A30035

Triangle U, read by rows, where column k of U^j+1 = column j of P^3k+1 for j>=0, k>=0 and P=A136220. A136228

Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms in row n at positions {floor(m*(m+7)/6), m>=0} and then taking partial sums, starting with all 1's in row 0. A136217

Column 0 of triangles A136220 and A136228; also equals column 0 of tables A136217 and A136218. A136221

Triangle, read by rows of A136219(n) terms, where row n+1 is generated from row n by first inserting zeros in row n at positions {[m*(m+7)/6], m>=0} and then taking partial sums, starting with a '1' in row 0. A136218

Matrix square of triangle A136220, read by rows. A136225