1100000203 has 2 divisors, whose sum is σ = 1100000204. Its totient is φ = 1100000202.

The previous prime is 1100000197. The next prime is 1100000227. The reversal of 1100000203 is 3020000011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1100000203 - 2²⁵ = 1066445771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100004203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550000101 + 550000102.

It is an arithmetic number, because the mean of its divisors is an integer number (550000102).

Almost surely, 2^1100000203 is an apocalyptic number.

1100000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100000203 is an equidigital number, since it uses as much as digits as its factorization.

1100000203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1100000203 is about 33166.2509638940. The cubic root of 1100000203 is about 1032.2801789572.

Adding to 1100000203 its reverse (3020000011), we get a palindrome (4120000214).

The spelling of 1100000203 in words is "one billion, one hundred million, two hundred three", and thus it is an aban number.