11031103231 has 4 divisors (see below), whose sum is σ = 11031374392. Its totient is φ = 11030832072.

The previous prime is 11031103211. The next prime is 11031103247. The reversal of 11031103231 is 13230113011.

11031103231 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, and also an emirpimes, since its reverse is a distinct semiprime: 13230113011 = 521 ⋅25393691.

It is a cyclic number.

It is not a de Polignac number, because 11031103231 - 2⁵ = 11031103199 is a prime.

It is a super-2 number, since 2×11031103231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031103211) 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, 60816 + ... + 160501.

It is an arithmetic number, because the mean of its divisors is an integer number (2757843598).

Almost surely, 2^11031103231 is an apocalyptic number.

11031103231 is a deficient number, since it is larger than the sum of its proper divisors (271161).

11031103231 is an equidigital number, since it uses as much as digits as its factorization.

11031103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271160.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11031103231 its reverse (13230113011), we get a palindrome (24261216242).

The spelling of 11031103231 in words is "eleven billion, thirty-one million, one hundred three thousand, two hundred thirty-one".