1203112003 has 2 divisors, whose sum is σ = 1203112004. Its totient is φ = 1203112002.

The previous prime is 1203111989. The next prime is 1203112121. The reversal of 1203112003 is 3002113021.

It is a weak prime.

It is an emirp because it is prime and its reverse (3002113021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203112003 - 2⁵ = 1203111971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1203110003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601556001 + 601556002.

It is an arithmetic number, because the mean of its divisors is an integer number (601556002).

Almost surely, 2^1203112003 is an apocalyptic number.

1203112003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203112003 is an equidigital number, since it uses as much as digits as its factorization.

1203112003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1203112003 is about 34685.9049615258. The cubic root of 1203112003 is about 1063.5763864185.

Adding to 1203112003 its reverse (3002113021), we get a palindrome (4205225024).

The spelling of 1203112003 in words is "one billion, two hundred three million, one hundred twelve thousand, three".