11203113331 has 4 divisors (see below), whose sum is σ = 11209180752. Its totient is φ = 11197045912.

The previous prime is 11203113323. The next prime is 11203113367. The reversal of 11203113331 is 13331130211.

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 11203113331 - 2³ = 11203113323 is a prime.

It is a super-2 number, since 2×11203113331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203113299 and 11203113308.

It is not an unprimeable number, because it can be changed into a prime (11203113731) 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 3 ways as a sum of consecutive naturals, for example, 3030940 + ... + 3034633.

It is an arithmetic number, because the mean of its divisors is an integer number (2802295188).

Almost surely, 2^11203113331 is an apocalyptic number.

11203113331 is a deficient number, since it is larger than the sum of its proper divisors (6067421).

11203113331 is an equidigital number, since it uses as much as digits as its factorization.

11203113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067420.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11203113331 its reverse (13331130211), we get a palindrome (24534243542).

The spelling of 11203113331 in words is "eleven billion, two hundred three million, one hundred thirteen thousand, three hundred thirty-one".