Properties of the Number 71217

Seventy-One Thousand Two Hundred Seventeen

Basics

Value: 71216 → 71217 → 71218

Parity: odd

Prime: No

Previous Prime: 71209

Next Prime: 71233

Digit Sum: 18

Digital Root: 9

Palindrome: Yes

Factorization: 3 ² × 41 × 193

Divisors: 1, 3, 9, 41, 123, 193, 369, 579, 1737, 7913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001011000110001

Octal: 213061

Duodecimal: 35269

Hexadecimal: 11631

Square: 5071861089

Square Root: 266.865134478073

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

Base-11 Armstrong or narcissistic numbers (written in base 10). A161948

Base-10 palindromes that start with 7. A43042

Palindromes in A082939. A82940

Palindromic composite numbers starting with a digit 7. A222728

Number of n X n binary arrays symmetric about the diagonal and under 90-degree rotation with all ones connected only either four adjacent vertically or four adjacent horizontally. A145794

Palindromes which are the concatenation of 3 or more terms of an arithmetic sequence with nonzero difference. A62564

Numbers k such that the largest prime factor of the sum of successive primes p(k) + p(k+1) is greater than k. A71217

Number of (n+1)X(4+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements greater than the absolute difference of its antidiagonal elements. A251224