Properties of the Number 34191

Thirty-Four Thousand One Hundred Ninety-One

Basics

Value: 34190 → 34191 → 34192

Parity: odd

Prime: No

Previous Prime: 34183

Next Prime: 34211

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 29 × 131

Divisors: 1, 3, 9, 29, 87, 131, 261, 393, 1179, 3799

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1000010110001111

Octal: 102617

Duodecimal: 17953

Hexadecimal: 858f

Square: 1169024481

Square Root: 184.9080852748197

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

Triple and reverse digits. A163632

Hexagonal numbers with prime indices. A117961

G.f. A(x) satisfies A(x) = 1 + x·A(x)⁶/(1 + x·A(x)²). A378920

Reverse or triple: if reverse(a(n)) > a(n), a(n+1) = reverse(a(n)), else a(n+1) = 3·a(n). A42938

Terms of A073872 that do not change their position in the rearrangement; i.e., values of A073872(n) which equal n(n+1)/2. A73873

a(1) = 0, then smallest triangular number such that a(n+1)- a(n) is a palindrome. A75057

Triangular numbers for which the sum of the digits is a heptagonal number. A117312

Triangular numbers T such that both (T+2) and (T-2) are semiprimes. A242356

Triangular numbers that in base 2 have the same number of 0's and 1's. A345348

a(n) = (n + 1)*(4·n² + 14·n + 9)/3. A268484