13131241333321 has 4 divisors (see below), whose sum is σ = 13266614955412. Its totient is φ = 12995867711232.

The previous prime is 13131241333307. The next prime is 13131241333393. The reversal of 13131241333321 is 12333314213131.

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 2982805326400 + 10148436006921 = 1727080^2 + 3185661^2 .

It is a cyclic number.

It is not a de Polignac number, because 13131241333321 - 2⁵ = 13131241333289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131241333121) 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, 67686810900 + ... + 67686811093.

It is an arithmetic number, because the mean of its divisors is an integer number (3316653738853).

Almost surely, 2^{13131241333321} is an apocalyptic number.

It is an amenable number.

13131241333321 is a deficient number, since it is larger than the sum of its proper divisors (135373622091).

13131241333321 is an equidigital number, since it uses as much as digits as its factorization.

13131241333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135373622090.

The product of its digits is 11664, while the sum is 31.

Adding to 13131241333321 its reverse (12333314213131), we get a palindrome (25464555546452).

The spelling of 13131241333321 in words is "thirteen trillion, one hundred thirty-one billion, two hundred forty-one million, three hundred thirty-three thousand, three hundred twenty-one".