11711
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 13680
- Proper Divisor Sum (Aliquot Sum)
- 1969
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9996
- Möbius Function
- 0
- Radical
- 1673
- Omega Function (Ω)
- 3
- 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
- 81
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Greatest k such that binomial(k,n) has fewer than n distinct prime factors.at n=44A005735
- Cube root of A030683.at n=35A030684
- Numbers with multiplicative digital root value 7.at n=12A034054
- Base 10 palindromes that start with 1.at n=39A043036
- Numbers having four 1's in base 10.at n=26A043496
- Palindromic and divisible by 7.at n=36A045642
- a(n) = smallest palindrome > a(n-1) such that a(1)*a(2)*...*a(n) + 1 is prime with a(1) = 2.at n=18A051896
- Numbers n such that sum of digits and product of digits are both prime.at n=21A052430
- Numbers k such that Euler phi(k) / Carmichael lambda(k) = 14.at n=25A066696
- a(n) = A075443(A075451(n)).at n=25A075452
- Palindromic odd numbers with exactly 3 prime factors (counted with multiplicity).at n=36A075814
- Palindromic odd composite numbers with an odd number of prime factors (counted with multiplicity).at n=39A075815
- Palindromic numbers with prime middle digit.at n=47A076609
- Last term of n-th row of A077526.at n=10A077525
- Palindromes whose product of digits is a positive palindrome.at n=37A082207
- Smallest palindrome beginning with n and digit sum n, or 0 if no such number exists.at n=10A082217
- Palindromic time display in hours, minutes, seconds on a six spaced 24-hour digital clock, using hours 1-24.at n=17A082567
- Smallest palindrome beginning with n and a digit sum of n at some stage.at n=10A082935
- Palindromes divisible by each of their digits.at n=50A082937
- Palindromes in A083114.at n=33A083115