131221313312213 has 8 divisors (see below), whose sum is σ = 132169840555200. Its totient is φ = 130274723818080.

The previous prime is 131221313312153. The next prime is 131221313312269. The reversal of 131221313312213 is 312213313122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131221313312213 - 2⁶ = 131221313312149 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 (131221313812213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484301288 + ... + 484572161.

It is an arithmetic number, because the mean of its divisors is an integer number (16521230069400).

Almost surely, 2^{131221313312213} is an apocalyptic number.

It is an amenable number.

131221313312213 is a deficient number, since it is larger than the sum of its proper divisors (948527242987).

131221313312213 is an equidigital number, since it uses as much as digits as its factorization.

131221313312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968874427.

The product of its digits is 3888, while the sum is 29.

Adding to 131221313312213 its reverse (312213313122131), we get a palindrome (443434626434344).

The spelling of 131221313312213 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirteen million, three hundred twelve thousand, two hundred thirteen".