1303 has 2 divisors, whose sum is σ = 1304.
Its totient is φ = 1302.
The previous prime is 1301. The next prime is 1307. The reversal of 1303 is 3031.
Adding to 1303 its reverse (3031), we get a palindrome (4334).
Subtracting 1303 from its reverse (3031), we obtain a cube (1728 = 123).
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1303 - 21 = 1301 is a prime.
Together with 1301, it forms a pair of twin primes.
1303 is a lucky number.
It is a plaindrome in base 15.
It is a nialpdrome in base 11.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1301) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651 + 652.
It is an arithmetic number, because the mean of its divisors is an integer number (652).
21303 is an apocalyptic number.
1303 is a deficient number, since it is larger than the sum of its proper divisors (1).
1303 is an equidigital number, since it uses as much as digits as its factorization.
1303 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 9, while the sum is 7.
The square root of 1303 is about 36.0970912956.
The cubic root of 1303 is about 10.9223177108.
The spelling of 1303 in words is "one thousand, three hundred three", and thus it is an iban number.