Properties of the Number 319

Three Hundred Nineteen

Basics

Value: 318 → 319 → 320

Parity: odd

Prime: No

Previous Prime: 317

Next Prime: 331

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 29

Divisors: 1, 11, 29, 319

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111111

Octal: 477

Duodecimal: 227

Hexadecimal: 13f

Square: 101761

Square Root: 17.86057109949175

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

Toothpick sequence (see Comments lines for definition). A139250

Finitary numbers. Matula-Goebel numbers of rooted identity trees. A276625

a(n) = 6·n + 1. A16921

Ulam numbers: a(1) = 1; a(2) = 2; for n>2, a(n) = least number > a(n-1) which is a unique sum of two distinct earlier terms. A2858

Number of positive subset sums of integer partitions of n. A276024

Binary irreducible polynomials (primes in the ring GF(2)[X]), evaluated at X=2. A14580

Number of non-isomorphic self-dual multiset partitions of weight n. A316983

Numbers that are the sum of 4 but no fewer nonzero squares. A4215

Number of collapsible integer partitions of n. A275870

Happy numbers: numbers whose trajectory under iteration of sum of squares of digits map (see A003132) includes 1. A7770