11431213412 has 12 divisors (see below), whose sum is σ = 20010655980. Its totient is φ = 5713883136.

The previous prime is 11431213399. The next prime is 11431213441. The reversal of 11431213412 is 21431213411.

11431213412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6873073216 + 4558140196 = 82904^2 + 67514^2 .

It is an unprimeable number.

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, 415913 + ... + 442544.

It is an arithmetic number, because the mean of its divisors is an integer number (1667554665).

Almost surely, 2^11431213412 is an apocalyptic number.

It is an amenable number.

11431213412 is a deficient number, since it is larger than the sum of its proper divisors (8579442568).

11431213412 is a wasteful number, since it uses less digits than its factorization.

11431213412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861790 (or 861788 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 11431213412 its reverse (21431213411), we get a palindrome (32862426823).

Subtracting 11431213412 from its reverse (21431213411), we obtain a palindrome (9999999999).

The spelling of 11431213412 in words is "eleven billion, four hundred thirty-one million, two hundred thirteen thousand, four hundred twelve".