1203031103 has 4 divisors (see below), whose sum is σ = 1203341688. Its totient is φ = 1202720520.

The previous prime is 1203031091. The next prime is 1203031121. The reversal of 1203031103 is 3011303021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1203031103 - 2⁴ = 1203031087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203031003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149408 + ... + 157253.

It is an arithmetic number, because the mean of its divisors is an integer number (300835422).

Almost surely, 2^1203031103 is an apocalyptic number.

1203031103 is a deficient number, since it is larger than the sum of its proper divisors (310585).

1203031103 is an equidigital number, since it uses as much as digits as its factorization.

1203031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310584.

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

The square root of 1203031103 is about 34684.7387621703. The cubic root of 1203031103 is about 1063.5525467820.

Adding to 1203031103 its reverse (3011303021), we get a palindrome (4214334124).

The spelling of 1203031103 in words is "one billion, two hundred three million, thirty-one thousand, one hundred three".