Properties of the Number 19391

Nineteen Thousand Three Hundred Ninety-One

Basics

Value: 19390 → 19391 → 19392

Parity: odd

Prime: Yes

Previous Prime: 19387

Next Prime: 19403

Digit Sum: 23

Digital Root: 5

Palindrome: Yes

Factorization: 19391

Divisors: 1, 19391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101110111111

Octal: 45677

Duodecimal: B27B

Hexadecimal: 4bbf

Square: 376010881

Square Root: 139.25157090675853

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

Palindromic primes: prime numbers whose decimal expansion is a palindrome. A2385

Numbers such that every cyclic permutation is a prime. A68652

Balanced primes of order six. A96698

Primes p = prime(i) of level (1,3), i.e., such that A118534(i) = prime(i-3). A118467

Circular primes that are not repunits. A293663

Square array A(n, k), read by antidiagonals downwards: k-th prime p such that cyclic digit shifts produce exactly n different primes. A317716

Noncomposite numbers in the eastern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American. A168022

Primes p such that exactly five numbers among all circular permutations of the digits of p are prime. A344629

Palindromes which are prime and the sum of the digits is also prime. A82806

Primes p such that p's set of distinct digits is {1,3,9}. A108383