1123345603 has 2 divisors, whose sum is σ = 1123345604. Its totient is φ = 1123345602.

The previous prime is 1123345591. The next prime is 1123345621. The reversal of 1123345603 is 3065433211.

It is a weak prime.

It is an emirp because it is prime and its reverse (3065433211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123345603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123345673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561672801 + 561672802.

It is an arithmetic number, because the mean of its divisors is an integer number (561672802).

Almost surely, 2^1123345603 is an apocalyptic number.

1123345603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123345603 is an equidigital number, since it uses as much as digits as its factorization.

1123345603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1123345603 is about 33516.3482945264. The cubic root of 1123345603 is about 1039.5318414956.

Adding to 1123345603 its reverse (3065433211), we get a palindrome (4188778814).

The spelling of 1123345603 in words is "one billion, one hundred twenty-three million, three hundred forty-five thousand, six hundred three".