11123032013 has 4 divisors (see below), whose sum is σ = 11124867840. Its totient is φ = 11121196188.

The previous prime is 11123031991. The next prime is 11123032021. The reversal of 11123032013 is 31023032111.

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 11123032013 - 2²⁰ = 11121983437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123031982 and 11123032000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123032043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908795 + ... + 920952.

It is an arithmetic number, because the mean of its divisors is an integer number (2781216960).

Almost surely, 2^11123032013 is an apocalyptic number.

It is an amenable number.

11123032013 is a deficient number, since it is larger than the sum of its proper divisors (1835827).

11123032013 is an equidigital number, since it uses as much as digits as its factorization.

11123032013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835826.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11123032013 its reverse (31023032111), we get a palindrome (42146064124).

The spelling of 11123032013 in words is "eleven billion, one hundred twenty-three million, thirty-two thousand, thirteen".