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Properties of the Number -31451

Thirty-One Thousand Four Hundred Fifty-One

Basics

Value: -31452 → -31451 → -31450

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 7 × 4493

Divisors: 1, 7, 4493, 31451

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -111101011011011

Octal: -75333

Duodecimal: -1624B

Hexadecimal: -7adb

Square: 989165401

Square Root: 177.3442979066426

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

G.f. satisfies A(x) = exp( 2 * ∑k>=1 (-1)k+1 * A(-xk) * xk/k ). A363474
Array read by antidiagonals upwards: h(n,k) = number of sequences with n copies each of 1,2,...,k and longest increasing subsequence of length k (n>=1, k>=1). A47909
Smallest semiprime (A001358) which is at the end of an arithmetic progression of n semiprimes. A96003
Least number that ends an arithmetic progression of n numbers with the same prime signature. A87309
Positive integers of the form (10·m2+1)/11. A179338
Number of sequences with n copies each of 1, 2, 3 and longest increasing subsequence of length 3. A47911
Number of n-celled diagonally symmetric polyominoes without holes. A56881
Least number that ends an arithmetic progression of n numbers with the same number of divisors. A90548
Number of sequences with 4 copies each of 1,2,...,n and longest increasing subsequence of length n. A268847
Positions of records in A069862. A88947