11311234012 has 12 divisors (see below), whose sum is σ = 21317325736. Its totient is φ = 5220569520.

The previous prime is 11311233961. The next prime is 11311234043. The reversal of 11311234012 is 21043211311.

It is a super-2 number, since 2×11311234012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 108761814 + ... + 108761917.

Almost surely, 2^11311234012 is an apocalyptic number.

It is an amenable number.

11311234012 is a deficient number, since it is larger than the sum of its proper divisors (10006091724).

11311234012 is a wasteful number, since it uses less digits than its factorization.

11311234012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217523748 (or 217523746 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11311234012 its reverse (21043211311), we get a palindrome (32354445323).

The spelling of 11311234012 in words is "eleven billion, three hundred eleven million, two hundred thirty-four thousand, twelve".