Properties of the Number 3381

Three Thousand Three Hundred Eighty-One

Basics

Value: 3380 → 3381 → 3382

Parity: odd

Prime: No

Previous Prime: 3373

Next Prime: 3389

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 ² × 23

Divisors: 1, 3, 7, 21, 23, 49, 69, 147, 161, 483

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110100110101

Octal: 6465

Duodecimal: 1B59

Hexadecimal: d35

Square: 11431161

Square Root: 58.146367040426526

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

Integers of the form m*(m + 7)/8. A274979

18-gonal (or octadecagonal) numbers: a(n) = n*(8·n-7). A51870

Expansion of 1 + ∑_k>0 x^k^2/((1-x)(1-x²)...(1-x^2k)). A122129

Numbers k such that 2^k + 17 is prime. A57200

a(n) = ∑_k>=0 binomial(n,5·k+1). A133476

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order. A231263

Numbers divisible by prime(d+1) for each digit d of their base-10 representation. A256870

Numbers that can be written as s^x + t^y, with 1 < s < t and {s,t} = {x,y}; that is, are of the form s^s + t^t or s^t + t^s. A385232

Number of inequivalent ways to color vertices of a regular tetrahedron using <= n colors. A6008

a(n) = ∑_{k >= 0} binomial(n,5·k+3). A139748