11003020031 has 16 divisors (see below), whose sum is σ = 11177263104. Its totient is φ = 10830534624.

The previous prime is 11003020013. The next prime is 11003020033. The reversal of 11003020031 is 13002030011.

It is a cyclic number.

It is not a de Polignac number, because 11003020031 - 2⁶ = 11003019967 is a prime.

It is a super-2 number, since 2×11003020031² (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 = 11003019994 and 11003020021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003020033) 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, 12545765 + ... + 12546641.

It is an arithmetic number, because the mean of its divisors is an integer number (698578944).

Almost surely, 2^11003020031 is an apocalyptic number.

11003020031 is a deficient number, since it is larger than the sum of its proper divisors (174243073).

11003020031 is a wasteful number, since it uses less digits than its factorization.

11003020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 11003020031 its reverse (13002030011), we get a palindrome (24005050042).

The spelling of 11003020031 in words is "eleven billion, three million, twenty thousand, thirty-one".