1103312003 has 2 divisors, whose sum is σ = 1103312004. Its totient is φ = 1103312002.

The previous prime is 1103311973. The next prime is 1103312027. The reversal of 1103312003 is 3002133011.

It is a strong prime.

It is an emirp because it is prime and its reverse (3002133011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103312003 - 2²² = 1099117699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103312033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551656001 + 551656002.

It is an arithmetic number, because the mean of its divisors is an integer number (551656002).

Almost surely, 2^1103312003 is an apocalyptic number.

1103312003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103312003 is an equidigital number, since it uses as much as digits as its factorization.

1103312003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1103312003 is about 33216.1406999669. The cubic root of 1103312003 is about 1033.3151121888.

Adding to 1103312003 its reverse (3002133011), we get a palindrome (4105445014).

The spelling of 1103312003 in words is "one billion, one hundred three million, three hundred twelve thousand, three".