1103105603 has 2 divisors, whose sum is σ = 1103105604. Its totient is φ = 1103105602.

The previous prime is 1103105569. The next prime is 1103105611. The reversal of 1103105603 is 3065013011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1103105603 - 2⁶ = 1103105539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103105623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551552801 + 551552802.

It is an arithmetic number, because the mean of its divisors is an integer number (551552802).

Almost surely, 2^1103105603 is an apocalyptic number.

1103105603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103105603 is an equidigital number, since it uses as much as digits as its factorization.

1103105603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1103105603 is about 33213.0336313924. The cubic root of 1103105603 is about 1033.2506730156.

Adding to 1103105603 its reverse (3065013011), we get a palindrome (4168118614).

The spelling of 1103105603 in words is "one billion, one hundred three million, one hundred five thousand, six hundred three".