20113231132 has 12 divisors (see below), whose sum is σ = 35331989616. Its totient is φ = 10018376960.

The previous prime is 20113231091. The next prime is 20113231139. The reversal of 20113231132 is 23113231102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113231139) by changing a digit.

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, 9558469 + ... + 9560572.

It is an arithmetic number, because the mean of its divisors is an integer number (2944332468).

Almost surely, 2^20113231132 is an apocalyptic number.

It is an amenable number.

20113231132 is a deficient number, since it is larger than the sum of its proper divisors (15218758484).

20113231132 is a wasteful number, since it uses less digits than its factorization.

20113231132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19119308 (or 19119306 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20113231132 its reverse (23113231102), we get a palindrome (43226462234).

The spelling of 20113231132 in words is "twenty billion, one hundred thirteen million, two hundred thirty-one thousand, one hundred thirty-two".