Properties of the Number 61431

Sixty-One Thousand Four Hundred Thirty-One

Basics

Value: 61430 → 61431 → 61432

Parity: odd

Prime: No

Previous Prime: 61417

Next Prime: 61441

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 20477

Divisors: 1, 3, 20477, 61431

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111111110111

Octal: 167767

Duodecimal: 2B673

Hexadecimal: eff7

Square: 3773767761

Square Root: 247.85277888294897

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

Decimal values of the antidiagonals of the Sierpinski carpet considered as binary numbers. A292689

Numbers k such that k and k² use only the digits 1, 3, 4, 6 and 7. A137025

a(n) is the least k such that A342956(k) = n. A342957

Expansion of ∏_j>=1 1/(1 + (-1 + ∏_k>=1 1/(1 + x^k))^j). A307438

a(n) = LCM of the n consecutive numbers n(n-1)/2 + 1, ..., n(n+1)/2. A61431