6031
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6232
- Proper Divisor Sum (Aliquot Sum)
- 201
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5832
- Möbius Function
- 1
- Radical
- 6031
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 93
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numerators of coefficients for repeated integration.at n=6A002687
- Coordination sequence T2 for Zeolite Code NON.at n=47A008213
- Continued fraction for log(13).at n=81A016441
- Pseudoprimes to base 30.at n=32A020158
- Pseudoprimes to base 38.at n=35A020166
- Pseudoprimes to base 40.at n=24A020168
- Pseudoprimes to base 53.at n=44A020181
- Pseudoprimes to base 58.at n=28A020186
- Pseudoprimes to base 78.at n=22A020206
- Pseudoprimes to base 85.at n=43A020213
- Strong pseudoprimes to base 30.at n=10A020256
- Strong pseudoprimes to base 38.at n=10A020264
- Strong pseudoprimes to base 53.at n=11A020279
- Strong pseudoprimes to base 78.at n=11A020304
- Numbers k such that the continued fraction for sqrt(k) has period 92.at n=10A020431
- a(n) = Sum_{k=0..floor(n/2)} T(n,k), T given by A026758.at n=12A026766
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 53 ones.at n=0A031821
- Lucky numbers with size of gaps equal to 18 (lower terms).at n=32A031900
- a(n) = (2*n+1)*(9*n+1).at n=18A033573
- Numerators of continued fraction convergents to sqrt(129).at n=8A041234