11431313103 has 8 divisors (see below), whose sum is σ = 17419143808. Its totient is φ = 6532178904.

The previous prime is 11431313093. The next prime is 11431313123. The reversal of 11431313103 is 30131313411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11431313103 - 2⁴ = 11431313087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 544348243 = 11431313103 / (1 + 1 + 4 + 3 + 1 + 3 + 1 + 3 + 1 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11431313103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431313123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272174101 + ... + 272174142.

It is an arithmetic number, because the mean of its divisors is an integer number (2177392976).

Almost surely, 2^11431313103 is an apocalyptic number.

11431313103 is a deficient number, since it is larger than the sum of its proper divisors (5987830705).

11431313103 is an equidigital number, since it uses as much as digits as its factorization.

11431313103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544348253.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 11431313103 its reverse (30131313411), we get a palindrome (41562626514).

The spelling of 11431313103 in words is "eleven billion, four hundred thirty-one million, three hundred thirteen thousand, one hundred three".