1103 has 2 divisors, whose sum is σ = 1104.
Its totient is φ = 1102.
The previous prime is 1097. The next prime is 1109. The reversal of 1103 is 3011.
Adding to 1103 its reverse (3011), we get a palindrome (4114).
It is a balanced prime because it is at equal distance from previous prime (1097) and next prime (1109).
It is an emirp because it is prime and its reverse (3011) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1103 - 24 = 1087 is a prime.
It is a Sophie Germain prime.
It is an Ulam number.
It is a plaindrome in base 9, base 12, base 13, base 14 and base 16.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1109) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551 + 552.
It is an arithmetic number, because the mean of its divisors is an integer number (552).
21103 is an apocalyptic number.
1103 is a deficient number, since it is larger than the sum of its proper divisors (1).
1103 is an equidigital number, since it uses as much as digits as its factorization.
1103 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3, while the sum is 5.
The square root of 1103 is about 33.2114438108.
The cubic root of 1103 is about 10.3321770009.
The spelling of 1103 in words is "one thousand, one hundred three", and thus it is an iban number.