11041320403 has 4 divisors (see below), whose sum is σ = 11043980640. Its totient is φ = 11038660168.

The previous prime is 11041320383. The next prime is 11041320419. The reversal of 11041320403 is 30402314011.

11041320403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11041320403 - 2²⁵ = 11007765971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11041320443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323883 + ... + 1332196.

It is an arithmetic number, because the mean of its divisors is an integer number (2760995160).

Almost surely, 2^11041320403 is an apocalyptic number.

11041320403 is a deficient number, since it is larger than the sum of its proper divisors (2660237).

11041320403 is an equidigital number, since it uses as much as digits as its factorization.

11041320403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660236.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11041320403 its reverse (30402314011), we get a palindrome (41443634414).

It can be divided in two parts, 110413 and 20403, that added together give a triangular number (130816 = T₅₁₁).

The spelling of 11041320403 in words is "eleven billion, forty-one million, three hundred twenty thousand, four hundred three".