803
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 888
- Proper Divisor Sum (Aliquot Sum)
- 85
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 720
- Möbius Function
- 1
- Radical
- 803
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 20
- Smith 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
Names
- German
- achthundertdrei· ordinal: achthundertdreiste
- English
- eight hundred three· ordinal: eight hundred third
- Spanish
- ochocientos tres· ordinal: 803º
- French
- huit cent trois· ordinal: huit cent troisième
- Italian
- ottocentotre· ordinal: 803º
- Latin
- octingenti tres· ordinal: 803.
- Portuguese
- oitocentos e três· ordinal: 803º
Appears in sequences
- Numbers beginning with letter 'e' in English.at n=16A000873
- Number of partitions of n into Fibonacci parts (with a single type of 1).at n=34A003107
- Numbers that are the sum of 4 nonzero 4th powers.at n=40A003338
- Numbers that are the sum of 12 positive 6th powers.at n=14A003368
- Add 4, then reverse digits; start with 0.at n=41A003608
- a(n) = Sum_t t*F(n,t), where F(n,t) (see A095133) is the number of forests with n (unlabeled) nodes and exactly t trees.at n=9A005196
- Least k such that binomial(k,n) has n or more distinct prime factors.at n=29A005733
- Horizontally symmetric numbers.at n=50A007284
- Number of strict first-order maximal independent sets in path graph.at n=23A007383
- Add 7, then reverse digits.at n=8A007398
- Moebius transform of triangular numbers.at n=45A007438
- Coordination sequence T1 for Zeolite Code ACO, ASV, EDI, and THO.at n=20A008084
- Coordination sequence T3 for Zeolite Code EPI.at n=18A008092
- Coordination sequence T4 for Zeolite Code MFI.at n=18A008167
- Coordination sequence T2 for Zeolite Code -CLO.at n=25A009851
- Coordination sequence T3 for Zeolite Code CON.at n=20A009870
- Add 4, then reverse the decimal digits; start with 10.at n=52A016082
- Expansion of 1/((1-3*x)*(1-8*x)).at n=3A016140
- Index of 3^n within sequence of numbers of form 2^i*3^j (A003586).at n=31A022330
- Fibonacci sequence beginning 1, 23.at n=9A022393