Search a number
-
+
1223 is a prime number
BaseRepresentation
bin10011000111
31200022
4103013
514343
65355
73365
oct2307
91608
101223
11a12
1285b
13731
14635
15568
hex4c7

1223 has 2 divisors, whose sum is σ = 1224. Its totient is φ = 1222.

The previous prime is 1217. The next prime is 1229. The reversal of 1223 is 3221.

Adding to 1223 its reverse (3221), we get a palindrome (4444).

It can be divided in two parts, 122 and 3, that added together give a cube (125 = 53).

It is a balanced prime because it is at equal distance from previous prime (1217) and next prime (1229).

1223 is a truncatable prime.

It is an emirp because it is prime and its reverse (3221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223 - 28 = 967 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 10 and base 15.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611 + 612.

It is an arithmetic number, because the mean of its divisors is an integer number (612).

1223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223 is an equidigital number, since it uses as much as digits as its factorization.

1223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12, while the sum is 8.

The square root of 1223 is about 34.9714169001. The cubic root of 1223 is about 10.6940485726.

The spelling of 1223 in words is "one thousand, two hundred twenty-three", and thus it is an iban number.