11331131311013 has 4 divisors (see below), whose sum is σ = 11721859976940. Its totient is φ = 10940402645088.

The previous prime is 11331131311007. The next prime is 11331131311057. The reversal of 11331131311013 is 31011313113311.

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 8887183775044 + 2443947535969 = 2981138^2 + 1563313^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331131311013 - 2¹⁶ = 11331131245477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11331131311013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331131310013) 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, 195364332920 + ... + 195364332977.

It is an arithmetic number, because the mean of its divisors is an integer number (2930464994235).

Almost surely, 2^{11331131311013} is an apocalyptic number.

It is an amenable number.

11331131311013 is a deficient number, since it is larger than the sum of its proper divisors (390728665927).

11331131311013 is an equidigital number, since it uses as much as digits as its factorization.

11331131311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390728665926.

The product of its (nonzero) digits is 243, while the sum is 23.

Adding to 11331131311013 its reverse (31011313113311), we get a palindrome (42342444424324).

The spelling of 11331131311013 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred eleven thousand, thirteen".