Properties of the Number 16431

Sixteen Thousand Four Hundred Thirty-One

Basics

Value: 16430 → 16431 → 16432

Parity: odd

Prime: No

Previous Prime: 16427

Next Prime: 16433

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5477

Divisors: 1, 3, 5477, 16431

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000000101111

Octal: 40057

Duodecimal: 9613

Hexadecimal: 402f

Square: 269977761

Square Root: 128.18346227185472

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

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero. A303888

Exponents m such that the decimal expansion of 5^m exhibits its first zero from the right later than any previous exponent. A239010

Number of partitions of n into parts having at most two prime-factors. A101049

Number of Barlow packings that repeat after n (or a divisor of n) layers. A114438

Triangle read by rows: T(n,k) is the number of unsensed combinatorial maps with n edges and k vertices, 1 <= k <= n + 1. A380616

Ceiling of γ(n+7/10)/γ(7/10). A20106

a(n) = (n³ + 3·n - 2)/2. A132127

Number of unsensed combinatorial maps with n edges and 2 vertices. A380620

Minimal number (in decimal representation) with n nonprime substrings in base-4 representation (substrings with leading zeros are considered to be nonprime). A217104

Expansion of 1/((1-x)*(1-x²)²*(1-x³)*(1-x⁴)*(1-x⁵)). A1994