131423203443313 has 4 divisors (see below), whose sum is σ = 131451041449188. Its totient is φ = 131395365437440.

The previous prime is 131423203443143. The next prime is 131423203443359. The reversal of 131423203443313 is 313344302324131.

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 97204061260944 + 34219142182369 = 9859212^2 + 5849713^2 .

It is a cyclic number.

It is not a de Polignac number, because 131423203443313 - 2⁹ = 131423203442801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131423203443913) 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, 13918995856 + ... + 13919005297.

It is an arithmetic number, because the mean of its divisors is an integer number (32862760362297).

Almost surely, 2^{131423203443313} is an apocalyptic number.

It is an amenable number.

131423203443313 is a deficient number, since it is larger than the sum of its proper divisors (27838005875).

131423203443313 is an equidigital number, since it uses as much as digits as its factorization.

131423203443313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27838005874.

The product of its (nonzero) digits is 186624, while the sum is 37.

Adding to 131423203443313 its reverse (313344302324131), we get a palindrome (444767505767444).

The spelling of 131423203443313 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, two hundred three million, four hundred forty-three thousand, three hundred thirteen".