11311303213213 has 4 divisors (see below), whose sum is σ = 11312696753820. Its totient is φ = 11309909672608.

The previous prime is 11311303213201. The next prime is 11311303213229. The reversal of 11311303213213 is 31231230311311.

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 10859647978404 + 451655234809 = 3295398^2 + 672053^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311303213213 - 2¹⁷ = 11311303082141 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 (11311303213313) 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, 696758128 + ... + 696774361.

It is an arithmetic number, because the mean of its divisors is an integer number (2828174188455).

Almost surely, 2^{11311303213213} is an apocalyptic number.

It is an amenable number.

11311303213213 is a deficient number, since it is larger than the sum of its proper divisors (1393540607).

11311303213213 is an equidigital number, since it uses as much as digits as its factorization.

11311303213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393540606.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 11311303213213 its reverse (31231230311311), we get a palindrome (42542533524524).

The spelling of 11311303213213 in words is "eleven trillion, three hundred eleven billion, three hundred three million, two hundred thirteen thousand, two hundred thirteen".