Properties of the Number 31648

Thirty-One Thousand Six Hundred Forty-Eight

Basics

Value: 31647 → 31648 → 31649

Parity: even

Prime: No

Previous Prime: 31643

Next Prime: 31649

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 23 × 43

Divisors: 1, 2, 4, 8, 16, 23, 32, 43, 46, 86

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101110100000

Octal: 75640

Duodecimal: 16394

Hexadecimal: 7ba0

Square: 1001595904

Square Root: 177.8988476634967

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

a(0) = a(1) = 1; a(n+2) = 2·a(n+1) + 2·a(n). A26150

T(n,k)=Number of nXk 0,1 arrays with the row and column sums nondecreasing. A202560

T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock singular. A184686

Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect. A327948

Dirichlet convolution of A011782 (2^n-1) with A349451 (Dirichlet inverse of Fibonacci numbers). A349566

Generalized NSW numbers. A107903

Row sums of triangle A120894 (cascadence of 1+x+x²). A120897

Number of partitions of 2n in which odd parts and multiples of 3 and 5 occur with even multiplicities. There is no restriction on the other even parts. A102346

a(n) = A007678(2·n)/(2·n). A341734

Sylvester cyclotomic numbers for A002605. A105607