11331231112 has 16 divisors (see below), whose sum is σ = 21537101340. Its totient is φ = 5588004096.

The previous prime is 11331231101. The next prime is 11331231113. The reversal of 11331231112 is 21113213311.

It can be written as a sum of positive squares in 2 ways, for example, as 9632637316 + 1698593796 = 98146^2 + 41214^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11331231112.

It is not an unprimeable number, because it can be changed into a prime (11331231113) 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, 9700813 + ... + 9701980.

Almost surely, 2^11331231112 is an apocalyptic number.

It is an amenable number.

11331231112 is a deficient number, since it is larger than the sum of its proper divisors (10205870228).

11331231112 is a wasteful number, since it uses less digits than its factorization.

11331231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402872 (or 19402868 counting only the distinct ones).

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

Adding to 11331231112 its reverse (21113213311), we get a palindrome (32444444423).

The spelling of 11331231112 in words is "eleven billion, three hundred thirty-one million, two hundred thirty-one thousand, one hundred twelve".