Properties of the Number 11385

Eleven Thousand Three Hundred Eighty-Five

Basics

Value: 11384 → 11385 → 11386

Parity: odd

Prime: No

Previous Prime: 11383

Next Prime: 11393

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 11 × 23

Divisors: 1, 3, 5, 9, 11, 15, 23, 33, 45, 55

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10110001111001

Octal: 26171

Duodecimal: 6709

Hexadecimal: 2c79

Square: 129618225

Square Root: 106.70051546267244

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

Number of compositions of n that avoid the pattern 23-1. A189076

a(n) is both the sum of n+1 consecutive integers and the sum of the n immediately higher consecutive integers. A59270

a(n) = floor(n²/4)*(n/2). A34828

Write (sqrt(5)-1)/2 as a binary fraction; read this from left to right and whenever a 1 appears, note the integer formed by reading leftwards from that 1. A99971

T(n,k)=Unchanging value maps: number of nXk binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 nXk array. A219142

Numbers n for which nontrivial positive magic squares of exactly 10 different orders with magic sum n exist. For a definition of nontrivial positive magic squares, see A125005. A125017

T(n,k) is the number of n X k binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it. A183322

11 times triangular numbers. A152740

a(n) = 3·binomial(11·n+3,n)/(11·n+3). A234869

Numbers k such that the central binomial coefficient C(2k,k) is divisible by k². A121943