11321231011 has 4 divisors (see below), whose sum is σ = 11506825024. Its totient is φ = 11135637000.

The previous prime is 11321231003. The next prime is 11321231021. The reversal of 11321231011 is 11013212311.

It is a happy number.

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 11321231011 - 2³ = 11321231003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321231021) 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, 92796915 + ... + 92797036.

It is an arithmetic number, because the mean of its divisors is an integer number (2876706256).

Almost surely, 2^11321231011 is an apocalyptic number.

11321231011 is a deficient number, since it is larger than the sum of its proper divisors (185594013).

11321231011 is an equidigital number, since it uses as much as digits as its factorization.

11321231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185594012.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11321231011 its reverse (11013212311), we get a palindrome (22334443322).

The spelling of 11321231011 in words is "eleven billion, three hundred twenty-one million, two hundred thirty-one thousand, eleven".