11031320103 has 16 divisors (see below), whose sum is σ = 14803326720. Its totient is φ = 7306804736.

The previous prime is 11031320087. The next prime is 11031320117. The reversal of 11031320103 is 30102313011.

It is a cyclic number.

It is not a de Polignac number, because 11031320103 - 2⁴ = 11031320087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031320303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568128 + ... + 1575146.

It is an arithmetic number, because the mean of its divisors is an integer number (925207920).

Almost surely, 2^11031320103 is an apocalyptic number.

11031320103 is a deficient number, since it is larger than the sum of its proper divisors (3772006617).

11031320103 is a wasteful number, since it uses less digits than its factorization.

11031320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 11031320103 its reverse (30102313011), we get a palindrome (41133633114).

The spelling of 11031320103 in words is "eleven billion, thirty-one million, three hundred twenty thousand, one hundred three".