11043423011 has 4 divisors (see below), whose sum is σ = 11044025712. Its totient is φ = 11042820312.

The previous prime is 11043422993. The next prime is 11043423019. The reversal of 11043423011 is 11032434011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11043423011 - 2³⁰ = 9969681187 is a prime.

It is a super-2 number, since 2×11043423011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11043423019) 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, 272975 + ... + 310808.

It is an arithmetic number, because the mean of its divisors is an integer number (2761006428).

Almost surely, 2^11043423011 is an apocalyptic number.

11043423011 is a deficient number, since it is larger than the sum of its proper divisors (602701).

11043423011 is an equidigital number, since it uses as much as digits as its factorization.

11043423011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602700.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11043423011 its reverse (11032434011), we get a palindrome (22075857022).

The spelling of 11043423011 in words is "eleven billion, forty-three million, four hundred twenty-three thousand, eleven".