Properties of the Number 31448

Thirty-One Thousand Four Hundred Forty-Eight

Basics

Value: 31447 → 31448 → 31449

Parity: even

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 3931

Divisors: 1, 2, 4, 8, 3931, 7862, 15724, 31448

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101011011000

Octal: 75330

Duodecimal: 16248

Hexadecimal: 7ad8

Square: 988976704

Square Root: 177.33583958128713

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

Numbers whose set of base-13 digits is {1,4}. A32825

Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 4 and every element equal to at least one neighbor. A146092

Number of enhanced partial matchings of n elements treatable by "PTR" (Procedure Triple Reverse). A220872

Numbers that are equal to the sum of the number of divisors of their first k arithmetic derivatives, for some k. A269459

Numbers whose base-2 representation has one fewer 0's than 1's. A31448

Triangle of coefficients of characteristic polynomials of a special type of Cartan matrix: E_n for E₆,E₇,E₈,E₁₁ example M(6)/ E₆: {{2, -1, 0, 0, 0, 0}, {-1, 2, -1, 0, 0, 0}, {0, -1, 2, -1, 0, -1}, {0, 0, -1, 2, -1, 0}, {0, 0, 0, -1, 2, 0}, {0, 0, -1, 0, 0, 2}},. A136600