1131320131013 has 4 divisors (see below), whose sum is σ = 1131940714368. Its totient is φ = 1130699547660.

The previous prime is 1131320131001. The next prime is 1131320131043. The reversal of 1131320131013 is 3101310231311.

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 1131320131013 - 2⁸ = 1131320130757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131320131043) 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, 310288943 + ... + 310292588.

It is an arithmetic number, because the mean of its divisors is an integer number (282985178592).

Almost surely, 2^{1131320131013} is an apocalyptic number.

It is an amenable number.

1131320131013 is a deficient number, since it is larger than the sum of its proper divisors (620583355).

1131320131013 is an equidigital number, since it uses as much as digits as its factorization.

1131320131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620583354.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1131320131013 its reverse (3101310231311), we get a palindrome (4232630362324).

The spelling of 1131320131013 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, one hundred thirty-one thousand, thirteen".