Properties of the Number -108345

One Hundred Eight Thousand Three Hundred Forty-Five

Basics

Value: -108346 → -108345 → -108344

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 31 × 233

Divisors: 1, 3, 5, 15, 31, 93, 155, 233, 465, 699

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11010011100111001

Octal: -323471

Duodecimal: -52849

Hexadecimal: -1a739

Square: 11738639025

Square Root: 329.15801676398524

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

Doubly triangular numbers: a(n) = n*(n+1)*(n²+n+2)/8. A2817

Terms of A324315 (squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p) that are also hexagonal numbers (A000384) with index equal to their largest prime factor. A324319

Triangular numbers which have one or more occurrences of exactly six different digits. A241789

Triangular numbers t which are average of two consecutive primes p and p+4. A129752

a(n) = Fibonacci(n)*(2·Fibonacci(n)-1). A95122

26-gonal pyramidal numbers: a(n) = n*(n+1)*(8·n-7)/2. A256646

Triangular numbers t such that all the digits needed to write the consecutive triangular numbers from 0 to t fill exactly an equilateral triangle (no holes, no overlaps). A158030

Composite numbers k such that P(k, 7) == 7 (mod k), where P(k, 7) = A084768(k) is the k-th Legendre polynomial evaluated at 7. A330205