11403434203 has 12 divisors (see below), whose sum is σ = 13314184032. Its totient is φ = 9738293040.

The previous prime is 11403434167. The next prime is 11403434209. The reversal of 11403434203 is 30243430411.

It is a de Polignac number, because none of the positive numbers 2^k-11403434203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11403434209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416100 + ... + 442657.

It is an arithmetic number, because the mean of its divisors is an integer number (1109515336).

Almost surely, 2^11403434203 is an apocalyptic number.

11403434203 is a deficient number, since it is larger than the sum of its proper divisors (1910749829).

11403434203 is an equidigital number, since it uses as much as digits as its factorization.

11403434203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859042 (or 859035 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 11403434203 its reverse (30243430411), we get a palindrome (41646864614).

It can be divided in two parts, 1140 and 3434203, that added together give a palindrome (3435343).

The spelling of 11403434203 in words is "eleven billion, four hundred three million, four hundred thirty-four thousand, two hundred three".