11003031013 has 16 divisors (see below), whose sum is σ = 11943288000. Its totient is φ = 10076451840.

The previous prime is 11003031007. The next prime is 11003031079. The reversal of 11003031013 is 31013030011.

It is a happy number.

It is not a de Polignac number, because 11003031013 - 2⁹ = 11003030501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003030984 and 11003031002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003031713) 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, 1039558 + ... + 1050088.

It is an arithmetic number, because the mean of its divisors is an integer number (746455500).

Almost surely, 2^11003031013 is an apocalyptic number.

11003031013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11003031013 is a deficient number, since it is larger than the sum of its proper divisors (940256987).

11003031013 is a wasteful number, since it uses less digits than its factorization.

11003031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11172.

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 11003031013 its reverse (31013030011), we get a palindrome (42016061024).

The spelling of 11003031013 in words is "eleven billion, three million, thirty-one thousand, thirteen".