11003431313 has 4 divisors (see below), whose sum is σ = 12575350080. Its totient is φ = 9431512548.

The previous prime is 11003431267. The next prime is 11003431331. The reversal of 11003431313 is 31313430011.

11003431313 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31313430011 = 1439 ⋅21760549.

It is a cyclic number.

It is not a de Polignac number, because 11003431313 - 2²⁸ = 10734995857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11003431363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785959373 + ... + 785959386.

It is an arithmetic number, because the mean of its divisors is an integer number (3143837520).

Almost surely, 2^11003431313 is an apocalyptic number.

It is an amenable number.

11003431313 is a deficient number, since it is larger than the sum of its proper divisors (1571918767).

11003431313 is an equidigital number, since it uses as much as digits as its factorization.

11003431313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571918766.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11003431313 its reverse (31313430011), we get a palindrome (42316861324).

The spelling of 11003431313 in words is "eleven billion, three million, four hundred thirty-one thousand, three hundred thirteen".