11312231011 has 4 divisors (see below), whose sum is σ = 11503963800. Its totient is φ = 11120498224.

The previous prime is 11312231009. The next prime is 11312231017. The reversal of 11312231011 is 11013221311.

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 11312231011 - 2¹ = 11312231009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312231017) 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, 95866306 + ... + 95866423.

It is an arithmetic number, because the mean of its divisors is an integer number (2875990950).

Almost surely, 2^11312231011 is an apocalyptic number.

11312231011 is a deficient number, since it is larger than the sum of its proper divisors (191732789).

11312231011 is an equidigital number, since it uses as much as digits as its factorization.

11312231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191732788.

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

Adding to 11312231011 its reverse (11013221311), we get a palindrome (22325452322).

The spelling of 11312231011 in words is "eleven billion, three hundred twelve million, two hundred thirty-one thousand, eleven".