2324
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4704
- Proper Divisor Sum (Aliquot Sum)
- 2380
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 984
- Möbius Function
- 0
- Radical
- 1162
- Omega Function (Ω)
- 4
- 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
- 120
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = n concatenated with n + 1.at n=22A001704
- Numbers that are the sum of 5 positive 5th powers.at n=41A003350
- Numbers that are the sum of 11 positive 7th powers.at n=13A003378
- a(n) = C(n,1) + C(n,2) + C(n,3), or n*(n^2 + 5)/6.at n=24A004006
- Number of factorizations of permutations of n letters into cycles in nondecreasing length order.at n=6A007841
- Coordination sequence T3 for Zeolite Code MOR.at n=31A008184
- Base-6 Armstrong or narcissistic numbers (written in base 10).at n=9A010348
- Numbers k such that the continued fraction for sqrt(k) has period 28.at n=40A020367
- [ (3rd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 1 mod 4}.at n=6A024386
- Number of partitions of n with distinct parts p(i) such that if i != j, then |p(i) - p(j)| >= 3.at n=68A025157
- a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 0, 1, 2, 0.at n=15A025251
- Pair up the numbers.at n=11A030655
- Numbers k such that 87*2^k+1 is prime.at n=15A032393
- Fractional part of square root of a(n) starts with 2: first term of runs.at n=45A034108
- Concatenation of two or more consecutive positive integers.at n=30A035333
- Positive numbers having the same set of digits in base 5 and base 10.at n=22A037433
- Shifts left under transform T where Ta is phi DCONV a.at n=35A038045
- a(n)=(s(n)+6)/9, where s(n)=n-th base 9 palindrome that starts with 3.at n=35A043074
- Numbers having three 4's in base 8.at n=10A043439
- Numbers k such that the string 6,2 occurs in the base 9 representation of k but not of k-1.at n=31A044307