11331231313 has 6 divisors (see below), whose sum is σ = 11845314194. Its totient is φ = 10838568576.

The previous prime is 11331231311. The next prime is 11331231341. The reversal of 11331231313 is 31313213311.

11331231313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9854135824 + 1477095489 = 99268^2 + 38433^2 .

It is not a de Polignac number, because 11331231313 - 2¹ = 11331231311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331231311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10709520 + ... + 10710577.

Almost surely, 2^11331231313 is an apocalyptic number.

It is an amenable number.

11331231313 is a deficient number, since it is larger than the sum of its proper divisors (514082881).

11331231313 is an equidigital number, since it uses as much as digits as its factorization.

11331231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21420143 (or 21420120 counting only the distinct ones).

The product of its digits is 486, while the sum is 22.

Adding to 11331231313 its reverse (31313213311), we get a palindrome (42644444624).

The spelling of 11331231313 in words is "eleven billion, three hundred thirty-one million, two hundred thirty-one thousand, three hundred thirteen".