Properties of the Number 1219

One Thousand Two Hundred Nineteen

Basics

Value: 1218 → 1219 → 1220

Parity: odd

Prime: No

Previous Prime: 1217

Next Prime: 1223

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 23 × 53

Divisors: 1, 23, 53, 1219

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000011

Octal: 2303

Duodecimal: 857

Hexadecimal: 4c3

Square: 1485961

Square Root: 34.91418050019218

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

Centered triangular numbers: a(n) = 3·n*(n-1)/2 + 1. A5448

Number of partitions of n into distinct parts >= 2. A25147

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

Describe n. Also called the "Say What You See" or "Look and Say" sequence LS(n). A45918

Number of sets (in the Hausdorff metric geometry) at each location between two sets defining a polygonal configuration consisting of two 4-gonal polygonal components chained with string components of length l as l varies. A152929

a(n) = a(n-1) + a(n-2) + 1, with a(0) = a(1) = 1. A1595

Numbers that are the sum of 9 positive 5th powers. A3354

Numbers that are the sum of 10 positive 5th powers. A3355

Number of partitions of n into Fibonacci parts (with a single type of 1). A3107

a(n) = n*(n + 7)/2. A55999