Properties of the Number 31049

Thirty-One Thousand Forty-Nine

Basics

Value: 31048 → 31049 → 31050

Parity: odd

Prime: No

Previous Prime: 31039

Next Prime: 31051

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 61 × 509

Divisors: 1, 61, 509, 31049

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100101001001

Octal: 74511

Duodecimal: 15B75

Hexadecimal: 7949

Square: 964040401

Square Root: 176.207264322445

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

Tribonacci-like sequence; a(0)=2, a(1)=1, a(2)=1, a(n) = a(n-1) + a(n-2) + a(n-3). A141036

Deficiency of prime-shifted squares: a(n) = 2·A003961(n²) - σ(A003961(n²)), where A003961 is fully multiplicative function with a(prime(i)) = prime(i+1). A378231

Numbers n such that σ(n+1) - σ(n-1) = n+1. A260420

Let f(x) = 1 + ∑_j>=4 (|μ(j)| - |μ(j-1)|)*x^j, where μ(n) is the Möbius function (A008683). Then a(n) is n times the coefficient of xⁿ in the expansion of log(f(x)). A262400

Position of n-th 3 in A031045. A31049