11311113213 has 24 divisors (see below), whose sum is σ = 17680074048. Its totient is φ = 7212880224.

The previous prime is 11311113179. The next prime is 11311113221. The reversal of 11311113213 is 31231111311.

It is not a de Polignac number, because 11311113213 - 2⁸ = 11311112957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311113293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1006320 + ... + 1017497.

It is an arithmetic number, because the mean of its divisors is an integer number (736669752).

Almost surely, 2^11311113213 is an apocalyptic number.

It is an amenable number.

11311113213 is a deficient number, since it is larger than the sum of its proper divisors (6368960835).

11311113213 is an equidigital number, since it uses as much as digits as its factorization.

11311113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023855 (or 2023843 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11311113213 its reverse (31231111311), we get a palindrome (42542224524).

The spelling of 11311113213 in words is "eleven billion, three hundred eleven million, one hundred thirteen thousand, two hundred thirteen".