3201
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 6
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 4704
- Proper Divisor Sum (Aliquot Sum)
- 1503
- 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
- 1920
- Möbius Function
- -1
- Radical
- 3201
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 167
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Octagonal numbers: n*(3*n-2). Also called star numbers.at n=33A000567
- Squares written in base 4.at n=15A001739
- Coordination sequence T2 for Zeolite Code THO.at n=40A008239
- If a, b in sequence, so is ab+5.at n=38A009304
- exp(sec(x)*arcsin(x))=1+x+1/2!*x^2+5/3!*x^3+17/4!*x^4+85/5!*x^5...at n=7A012782
- sinh(sec(x)*arcsin(x))=x+5/3!*x^3+85/5!*x^5+3201/7!*x^7+204905/9!*x^9...at n=3A012788
- Odd octagonal numbers: (2n+1)*(6n+1).at n=16A014641
- Pseudoprimes to base 8.at n=40A020137
- Pseudoprimes to base 19.at n=25A020147
- Pseudoprimes to base 20.at n=20A020148
- Pseudoprimes to base 28.at n=21A020156
- Pseudoprimes to base 34.at n=34A020162
- Pseudoprimes to base 46.at n=36A020174
- Pseudoprimes to base 47.at n=35A020175
- Pseudoprimes to base 50.at n=30A020178
- Pseudoprimes to base 52.at n=16A020180
- Pseudoprimes to base 67.at n=32A020195
- Pseudoprimes to base 70.at n=22A020198
- Pseudoprimes to base 79.at n=22A020207
- Pseudoprimes to base 85.at n=31A020213