1103903 has 2 divisors, whose sum is σ = 1103904. Its totient is φ = 1103902.

The previous prime is 1103899. The next prime is 1103911. The reversal of 1103903 is 3093011.

It is a weak prime.

It is an emirp because it is prime and its reverse (3093011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103903 - 2² = 1103899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551951 + 551952.

It is an arithmetic number, because the mean of its divisors is an integer number (551952).

2^1103903 is an apocalyptic number.

1103903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103903 is an equidigital number, since it uses as much as digits as its factorization.

1103903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1103903 is about 1050.6678828250. The cubic root of 1103903 is about 103.3499580143.

Adding to 1103903 its reverse (3093011), we get a palindrome (4196914).

The spelling of 1103903 in words is "one million, one hundred three thousand, nine hundred three".