Properties of the Number 1309

One Thousand Three Hundred Nine

Basics

Value: 1308 → 1309 → 1310

Parity: odd

Prime: No

Previous Prime: 1307

Next Prime: 1319

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 7 × 11 × 17

Divisors: 1, 7, 11, 17, 77, 119, 187, 1309

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100011101

Octal: 2435

Duodecimal: 911

Hexadecimal: 51d

Square: 1713481

Square Root: 36.180105030251084

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 Look-and-Say partitions of n; see Comments. A239455

Boustrophedon transform of all-1's sequence. A667

Number of partitions of n of order n. A74761

Fibonacci sequence beginning 1, 5. A22095

Number of compositions of n into positive triangular numbers. A23361

Number of integer partitions of n whose negated run-lengths are not unimodal. A332639

Number of integer partitions of n containing no prime indices of the parts. A324756

Numbers k such that k, k+1 and k+2 have the same number of divisors. A5238

Generalized 22-gonal (or icosidigonal) numbers: m*(10·m - 9) with m = 0, +1, -1, +2, -2, +3, -3, ... A303299

Primitively primeshift-abundant numbers: Numbers that are included in A246282 (k with A003961(k) > 2k), but none of whose proper divisors are. A337372