Properties of the Number 31201

Thirty-One Thousand Two Hundred One

Basics

Value: 31200 → 31201 → 31202

Parity: odd

Prime: No

Previous Prime: 31193

Next Prime: 31219

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 41 × 761

Divisors: 1, 41, 761, 31201

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100111100001

Octal: 74741

Duodecimal: 16081

Hexadecimal: 79e1

Square: 973502401

Square Root: 176.63804799646084

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

Centered 40-gonal numbers. A195317

Number of subsets of {1,..,n} of cardinality >= 2 such that the elements of each counted subset are pairwise coprime. A276187

a(n) = n*(n² - 4·n + 5)/2. A162607

40-gonal numbers: a(n) = 38·n*(n-1)/2 + n. A261191

Molien series for complete weight enumerators of self-dual codes over Z/8Z. A92544

Number of (w,x,y,z) with all terms in {1,...,n} and 2w·x<=3·y*z. A211921

Number of (w,x,y,z) with all terms in {0,...,n} and at least one of them is the range of {w,x,y,z}. A212746

Semiprimes k = pq such that p^k == p (mod k) and q^k == q (mod k). A294169

Table T(n,k) = -2·T(n-1,k)+T(n-1,k+1) = T(n,k-4), 0<=n. A140287

a(n) = 78·n² + 1. A158769