11031320313 has 32 divisors (see below), whose sum is σ = 18029114880. Its totient is φ = 6622922880.

The previous prime is 11031320303. The next prime is 11031320317. The reversal of 11031320313 is 31302313011.

It is a happy number.

11031320313 is a `hidden beast` number, since 1 + 1 + 0 + 31 + 320 + 313 = 666.

It is not a de Polignac number, because 11031320313 - 2⁶ = 11031320249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11031320317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368881 + ... + 397662.

It is an arithmetic number, because the mean of its divisors is an integer number (563409840).

Almost surely, 2^11031320313 is an apocalyptic number.

11031320313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11031320313 is a deficient number, since it is larger than the sum of its proper divisors (6997794567).

11031320313 is a wasteful number, since it uses less digits than its factorization.

11031320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766606 (or 766600 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 11031320313 its reverse (31302313011), we get a palindrome (42333633324).

The spelling of 11031320313 in words is "eleven billion, thirty-one million, three hundred twenty thousand, three hundred thirteen".