131321020111013 has 4 divisors (see below), whose sum is σ = 132265775651520. Its totient is φ = 130376264570508.

The previous prime is 131321020110983. The next prime is 131321020111033. The reversal of 131321020111013 is 310111020123131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131321020111013 - 2¹⁰ = 131321020109989 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 (131321020111033) 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, 472377770045 + ... + 472377770322.

It is an arithmetic number, because the mean of its divisors is an integer number (33066443912880).

Almost surely, 2^{131321020111013} is an apocalyptic number.

It is an amenable number.

131321020111013 is a deficient number, since it is larger than the sum of its proper divisors (944755540507).

131321020111013 is an equidigital number, since it uses as much as digits as its factorization.

131321020111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944755540506.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 131321020111013 its reverse (310111020123131), we get a palindrome (441432040234144).

The spelling of 131321020111013 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, twenty million, one hundred eleven thousand, thirteen".