13311231303 has 4 divisors (see below), whose sum is σ = 17748308408. Its totient is φ = 8874154200.

The previous prime is 13311231287. The next prime is 13311231313. The reversal of 13311231303 is 30313211331.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13311231303 - 2⁴ = 13311231287 is a prime.

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 13311231303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311231313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218538548 + ... + 2218538553.

It is an arithmetic number, because the mean of its divisors is an integer number (4437077102).

Almost surely, 2^13311231303 is an apocalyptic number.

13311231303 is a deficient number, since it is larger than the sum of its proper divisors (4437077105).

13311231303 is an equidigital number, since it uses as much as digits as its factorization.

13311231303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437077104.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 13311231303 its reverse (30313211331), we get a palindrome (43624442634).

The spelling of 13311231303 in words is "thirteen billion, three hundred eleven million, two hundred thirty-one thousand, three hundred three".