10319
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 10944
- Proper Divisor Sum (Aliquot Sum)
- 625
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9696
- Möbius Function
- 1
- Radical
- 10319
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 148
- 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
- Numbers of Twopins positions.at n=22A005688
- Square root of A030693.at n=21A030694
- Denominators of continued fraction convergents to sqrt(943).at n=9A042825
- Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^17 in powers of x.at n=6A047642
- Numbers k such that k | 10^k + 9^k + 8^k + 7^k.at n=23A057214
- Total number of right truncatable primes in base n.at n=26A076586
- Number of permutations of length n which avoid the patterns 321, 12354.at n=13A116846
- Number of strings of numbers x(i=1..7) in 0..n with sum i*x(i)^3 equal to 7*n^3.at n=15A184724
- Smallest number k such that k^2 begins with n^3.at n=21A197722
- Number of real singularities on a family of degree-3n algebraic surfaces.at n=9A200048
- Number of isomorphism classes of IPR nanocones with 4 pentagons and a nearsymmetric boundary of length n.at n=14A219904
- Minimum value unattainable as the sum of 7 attained values of i^2 with i in 0..n.at n=40A225280
- Number of nondecreasing -n..n vectors of length 4 whose dot product with some other -n..n vector equals 4.at n=9A226343
- Triangular array of coefficients of polynomials q defined in Comments; the coefficients are written in the order of decreasing powers of x.at n=48A248670
- Number of length n+5 0..1 arrays with at most one downstep in every n consecutive neighbor pairs.at n=32A255996
- Greatest term of height n in Recamán's sequence A005132.at n=14A269832
- Numbers k such that (82*10^k + 161)/9 is prime.at n=22A271505
- Triangle T(n,k) read by rows: the number of semigroups of orientation-preserving partial transformations on n element with right waist k.at n=32A289714
- a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=2} (n+1-i)*(n+1-j).at n=21A331761
- a(n) is the number of numbers greater than 1 and up to prime(n)^2 whose prime factors are all less than or equal to prime(n).at n=38A342163