Properties of the Number -31947

Thirty-One Thousand Nine Hundred Forty-Seven

Basics

Value: -31948 → -31947 → -31946

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 23 × 463

Divisors: 1, 3, 23, 69, 463, 1389, 10649, 31947

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111110011001011

Octal: -76313

Duodecimal: -165A3

Hexadecimal: -7ccb

Square: 1020610809

Square Root: 178.73723730661163

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

Triangle read by rows of numbers b_n,k, n>=1, 1<=k<=n such that ∏_n,k 1/(1-qⁿ t^k)^b_n,k = 1 + ∑_i,j>=1 S_i,j qⁱ t^j where S_i,j are entries in the table A008277 (the inverse Euler transformation of the table of Stirling numbers of the second kind). A112340

Triangle read by rows: T(n,k) is the number of permutations of n elements with k the (smallest) header (first element) of the longest descending subsequence. A224652

Triangle read by rows of numbers b_n,k, n >= 2, 1 <= k < n such that (1/(1-q·t))*∏_n,k 1/(1 - qⁿ*t^k)^b_{n,k} = ∑_i,j>=1 S_i,j qⁱ*t^j where S_i,j are entries in the table A008277 (the inverse Euler transformation of the table of Stirling numbers of the second kind). A112339