14431
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14432
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14430
- Möbius Function
- -1
- Radical
- 14431
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 71
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1692
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Indices of prime Fibonacci numbers.at n=26A001605
- a(n) is the sum over all floor(k^3/n), k=0 to n inclusive.at n=37A014818
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 90 ones.at n=6A031858
- Primes which can be represented as the sum of a number and its reverse.at n=37A072382
- Numbers n for which there are exactly four k such that n = k + reverse(k).at n=35A072428
- Numbers n such that n and Fibonacci(n) have the same number of divisors.at n=34A080651
- Prime indices of prime Fibonacci numbers.at n=25A083668
- Number of base 15 circular n-digit numbers with adjacent digits differing by 1 or less.at n=8A124708
- Primes occurring in A084704 exactly 4 times.at n=6A128655
- Numbers k such that Lucas(4k)/7 is prime.at n=12A129745
- Primes congruent to 40 mod 41.at n=37A142237
- Primes congruent to 26 mod 43.at n=38A142275
- Primes congruent to 2 mod 47.at n=34A142355
- Primes congruent to 25 mod 49.at n=34A142435
- Primes congruent to 15 mod 53.at n=30A142545
- Primes congruent to 35 mod 59.at n=30A142762
- Primes congruent to 35 mod 61.at n=29A142833
- Ulam's spiral (WNW spoke).at n=30A143859
- Primes p such that the multiplicative order of 2 modulo p is (p-1)/10.at n=21A152310
- Triangle, read by rows, defined by T(n, k) = b(n) - b(k) - b(n-k) + 1 (see formula section for recurrence for b(n)).at n=48A176482