Properties of the Number 1223

One Thousand Two Hundred Twenty-Three

Basics

Value: 1222 → 1223 → 1224

Parity: odd

Prime: Yes

Previous Prime: 1217

Next Prime: 1229

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 1223

Divisors: 1, 1223

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011000111

Octal: 2307

Duodecimal: 85B

Hexadecimal: 4c7

Square: 1495729

Square Root: 34.97141690009142

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Sophie Germain primes p: 2p+1 is also prime. A5384

Balanced primes (of order one): primes which are the average of the previous prime and the following prime. A6562

a(n) = binomial(n+1, 2) + n - 1 = n*(n+3)/2 - 1. A34856

Primes whose decimal representation is a valid number in base 4 and interpreted as such is again a prime. A90707

Regular triangle read rows: T(n,k) = number of non-isomorphic multiset partitions of size n and length k. A317533

Primes whose decimal representation is a valid number in base 8 and interpreted as such is again a prime. A235394

a(n) = n² - 2. A8865

Primes that become another prime under the map 1 <-> 0 (acting on the digits: A222210), cf. A171013. A175791

Primes of the form k² - 2. A28871

Left-truncatable primes: every suffix is prime and no digits are zero. A24785