11103031013 has 4 divisors (see below), whose sum is σ = 11103384288. Its totient is φ = 11102677740.

The previous prime is 11103031001. The next prime is 11103031033. The reversal of 11103031013 is 31013030111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11103031013 - 2¹⁶ = 11102965477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103031033) 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, 124331 + ... + 194072.

It is an arithmetic number, because the mean of its divisors is an integer number (2775846072).

Almost surely, 2^11103031013 is an apocalyptic number.

It is an amenable number.

11103031013 is a deficient number, since it is larger than the sum of its proper divisors (353275).

11103031013 is an equidigital number, since it uses as much as digits as its factorization.

11103031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353274.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 11103031013 its reverse (31013030111), we get a palindrome (42116061124).

The spelling of 11103031013 in words is "eleven billion, one hundred three million, thirty-one thousand, thirteen".