Properties of the Number 11819

Eleven Thousand Eight Hundred Nineteen

Basics

Value: 11818 → 11819 → 11820

Parity: odd

Prime: No

Previous Prime: 11813

Next Prime: 11821

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 53 × 223

Divisors: 1, 53, 223, 11819

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111000101011

Octal: 27053

Duodecimal: 6A0B

Hexadecimal: 2e2b

Square: 139688761

Square Root: 108.7152243248387

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

Numbers k for which (9 + k!)/9 is prime. A137390

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays x(i,j) with row sums sum{j⁴*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i⁴*x(i,j), i=1..n+1} nondecreasing. A232797

Array T(n,k) = number of n X k binary matrices with rows and columns in lexicographically nondecreasing order. A180985

a(n) = 8·n² + 7·n + 1. A194268

Semiprimes p1·p2 such that p2 > p1 and p2 mod p1 = 11. A64909

Number of partitions of n with difference 2 between the number of odd parts and the number of even parts, both counted without multiplicity. A242693

Number of subsets of {2..n} such that the product of the elements is a decimal palindrome. A339508

Numbers whose set of base-14 digits is {3,4}. A32838

a(n) = a(n-1) XOR ∑_k=1..n-1 a(k), with a(1)=1, a(2)=3, where XOR is the binary exclusive OR operation. A99811

Number of nX4 binary arrays with rows and columns in nondecreasing order. A184139