11311303021013 has 4 divisors (see below), whose sum is σ = 11311351622508. Its totient is φ = 11311254419520.

The previous prime is 11311303021009. The next prime is 11311303021037. The reversal of 11311303021013 is 31012030311311.

11311303021013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4894722609604 + 6416580411409 = 2212402^2 + 2533097^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311303021013 - 2² = 11311303021009 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 (11311303021043) 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, 23949956 + ... + 24417677.

It is an arithmetic number, because the mean of its divisors is an integer number (2827837905627).

Almost surely, 2^{11311303021013} is an apocalyptic number.

It is an amenable number.

11311303021013 is a deficient number, since it is larger than the sum of its proper divisors (48601495).

11311303021013 is an equidigital number, since it uses as much as digits as its factorization.

11311303021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48601494.

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

Adding to 11311303021013 its reverse (31012030311311), we get a palindrome (42323333332324).

The spelling of 11311303021013 in words is "eleven trillion, three hundred eleven billion, three hundred three million, twenty-one thousand, thirteen".