131340405013 has 4 divisors (see below), whose sum is σ = 131341622508. Its totient is φ = 131339187520.

The previous prime is 131340404999. The next prime is 131340405019. The reversal of 131340405013 is 310504043131.

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 37365663204 + 93974741809 = 193302^2 + 306553^2 .

It is a cyclic number.

It is not a de Polignac number, because 131340405013 - 2⁹ = 131340404501 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 (131340405019) 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, 429298 + ... + 668563.

It is an arithmetic number, because the mean of its divisors is an integer number (32835405627).

Almost surely, 2^131340405013 is an apocalyptic number.

It is an amenable number.

131340405013 is a deficient number, since it is larger than the sum of its proper divisors (1217495).

131340405013 is a wasteful number, since it uses less digits than its factorization.

131340405013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217494.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 131340405013 its reverse (310504043131), we get a palindrome (441844448144).

The spelling of 131340405013 in words is "one hundred thirty-one billion, three hundred forty million, four hundred five thousand, thirteen".