13131311212 has 12 divisors (see below), whose sum is σ = 23037103656. Its totient is φ = 6549281600.

The previous prime is 13131311201. The next prime is 13131311239. The reversal of 13131311212 is 21211313131.

It is a self number, because there is not a number n which added to its sum of digits gives 13131311212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4091698 + ... + 4094905.

It is an arithmetic number, because the mean of its divisors is an integer number (1919758638).

Almost surely, 2^13131311212 is an apocalyptic number.

It is an amenable number.

13131311212 is a deficient number, since it is larger than the sum of its proper divisors (9905792444).

13131311212 is a wasteful number, since it uses less digits than its factorization.

13131311212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8187008 (or 8187006 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

Adding to 13131311212 its reverse (21211313131), we get a palindrome (34342624343).

The spelling of 13131311212 in words is "thirteen billion, one hundred thirty-one million, three hundred eleven thousand, two hundred twelve".