Properties of the Number 31276

Thirty-One Thousand Two Hundred Seventy-Six

Basics

Value: 31275 → 31276 → 31277

Parity: even

Prime: No

Previous Prime: 31271

Next Prime: 31277

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 7 × 1117

Divisors: 1, 2, 4, 7, 14, 28, 1117, 2234, 4468, 7819

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101000101100

Octal: 75054

Duodecimal: 16124

Hexadecimal: 7a2c

Square: 978188176

Square Root: 176.8502191121063

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 n X k 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. A285750

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4. A197250

Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n; then a(n) is the trace of M(n)^-7. A114359

p-INVERT of the central binomial coefficients (A000984), where p(S) = 1 - S - S². A289800

Number of nX5 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4. A197247

Number of nX6 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4. A197248

Number of length 4+4 0..n arrays with every five consecutive terms having four times some element equal to the sum of the remaining four. A249660

Number of length-n 0..7 arrays with no adjacent pair x,x+1 followed at any distance by x+1,x. A268456

Number of length-5 0..n arrays with no adjacent pair x,x+1 followed at any distance by x+1,x. A268459

Number of n X 6 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. A285748