11331211313 has 4 divisors (see below), whose sum is σ = 11331429108. Its totient is φ = 11330993520.

The previous prime is 11331211273. The next prime is 11331211321. The reversal of 11331211313 is 31311213311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31311213311 = 7 ⋅4473030473.

It can be written as a sum of positive squares in 2 ways, for example, as 3218065984 + 8113145329 = 56728^2 + 90073^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331211313 - 2⁸ = 11331211057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331211363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20003 + ... + 151863.

It is an arithmetic number, because the mean of its divisors is an integer number (2832857277).

Almost surely, 2^11331211313 is an apocalyptic number.

It is an amenable number.

11331211313 is a deficient number, since it is larger than the sum of its proper divisors (217795).

11331211313 is an equidigital number, since it uses as much as digits as its factorization.

11331211313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217794.

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

Adding to 11331211313 its reverse (31311213311), we get a palindrome (42642424624).

The spelling of 11331211313 in words is "eleven billion, three hundred thirty-one million, two hundred eleven thousand, three hundred thirteen".