11331131323213 has 4 divisors (see below), whose sum is σ = 12202756809628. Its totient is φ = 10459505836800.

The previous prime is 11331131323207. The next prime is 11331131323217. The reversal of 11331131323213 is 31232313113311.

It is a happy number.

11331131323213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1287321698404 + 10043809624809 = 1134602^2 + 3169197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331131323213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331131323217) 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, 435812743188 + ... + 435812743213.

It is an arithmetic number, because the mean of its divisors is an integer number (3050689202407).

Almost surely, 2^{11331131323213} is an apocalyptic number.

11331131323213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11331131323213 is a deficient number, since it is larger than the sum of its proper divisors (871625486415).

11331131323213 is an equidigital number, since it uses as much as digits as its factorization.

11331131323213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871625486414.

The product of its digits is 2916, while the sum is 28.

Adding to 11331131323213 its reverse (31232313113311), we get a palindrome (42563444436524).

The spelling of 11331131323213 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred thirteen".