11341
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 12384
- Proper Divisor Sum (Aliquot Sum)
- 1043
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10300
- Möbius Function
- 1
- Radical
- 11341
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 81
- 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
- Expansion of Product_{m>=1} (1+x^m)^11.at n=6A022576
- Least m such that if r and s in {1/1, 1/3, 1/6,..., 1/C(n+1,2)} satisfy r < s, then r < k/m < s for some integer k.at n=38A024826
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones.at n=8A031842
- Smallest k>1 such that k(p-1)-1 is divisible by p^2, p=n-th prime.at n=27A039914
- Denominators of continued fraction convergents to sqrt(78).at n=9A041139
- Denominators of continued fraction convergents to sqrt(312).at n=9A041589
- Centered 18-gonal numbers.at n=35A069131
- Numbers n such that the sum of the anti-divisors of n = phi(n).at n=6A074713
- Diagonal in array of n-gonal numbers A081422.at n=21A081438
- Total number of parts in all compositions of n into distinct odd parts.at n=40A097936
- p^2-p-1 that is not prime, where p is prime.at n=14A119609
- a(n) = 4*n^2 - 6*n + 1.at n=53A125202
- a(n) = 324*n + 1.at n=34A158272
- a(n) = a(n-1) + 12*n for n > 1; a(1) = 1.at n=42A166873
- Exponential Riordan array, defining orthogonal polynomials related to permutations without double falls.at n=29A182822
- Number of 0..n arrays x(0..3) of 4 elements without any two consecutive increases.at n=9A200786
- The least nonsquare number s having exactly n twos in the periodic part of the continued fraction of sqrt(s).at n=44A206582
- Nonprime numbers with all divisors starting and ending with digit 1.at n=9A208261
- Number of arrays of the median of three adjacent elements of some length-6 0..n array.at n=9A228741
- Numbers n of the form p^2-p-1 = A165900(p), for prime p, such that n^2-n-1 = A165900(n) is also prime.at n=6A237527