13112311203 has 12 divisors (see below), whose sum is σ = 18945475848. Its totient is φ = 8739015840.

The previous prime is 13112311183. The next prime is 13112311207. The reversal of 13112311203 is 30211321131.

13112311203 is a `hidden beast` number, since 1 + 311 + 231 + 120 + 3 = 666.

It is not a de Polignac number, because 13112311203 - 2⁸ = 13112310947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13112311207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177250 + ... + 240087.

It is an arithmetic number, because the mean of its divisors is an integer number (1578789654).

Almost surely, 2^13112311203 is an apocalyptic number.

13112311203 is a deficient number, since it is larger than the sum of its proper divisors (5833164645).

13112311203 is a wasteful number, since it uses less digits than its factorization.

13112311203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420834 (or 420831 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13112311203 its reverse (30211321131), we get a palindrome (43323632334).

The spelling of 13112311203 in words is "thirteen billion, one hundred twelve million, three hundred eleven thousand, two hundred three".