131413341223421 has 4 divisors (see below), whose sum is σ = 131751164723100. Its totient is φ = 131075517723744.

The previous prime is 131413341223399. The next prime is 131413341223429. The reversal of 131413341223421 is 124322143314131.

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 12591241915396 + 118822099308025 = 3548414^2 + 10900555^2 .

It is a cyclic number.

It is not a de Polignac number, because 131413341223421 - 2²⁶ = 131413274114557 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 (131413341223429) 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, 168911749256 + ... + 168911750033.

It is an arithmetic number, because the mean of its divisors is an integer number (32937791180775).

Almost surely, 2^{131413341223421} is an apocalyptic number.

It is an amenable number.

131413341223421 is a deficient number, since it is larger than the sum of its proper divisors (337823499679).

131413341223421 is an equidigital number, since it uses as much as digits as its factorization.

131413341223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337823499678.

The product of its digits is 41472, while the sum is 35.

Adding to 131413341223421 its reverse (124322143314131), we get a palindrome (255735484537552).

The spelling of 131413341223421 in words is "one hundred thirty-one trillion, four hundred thirteen billion, three hundred forty-one million, two hundred twenty-three thousand, four hundred twenty-one".