20111130232 has 8 divisors (see below), whose sum is σ = 37708369200. Its totient is φ = 10055565112.

The previous prime is 20111130217. The next prime is 20111130233. The reversal of 20111130232 is 23203111102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111130233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256945632 + ... + 1256945647.

It is an arithmetic number, because the mean of its divisors is an integer number (4713546150).

Almost surely, 2^20111130232 is an apocalyptic number.

It is an amenable number.

20111130232 is a deficient number, since it is larger than the sum of its proper divisors (17597238968).

20111130232 is a wasteful number, since it uses less digits than its factorization.

20111130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513891285 (or 2513891281 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20111130232 its reverse (23203111102), we get a palindrome (43314241334).

The spelling of 20111130232 in words is "twenty billion, one hundred eleven million, one hundred thirty thousand, two hundred thirty-two".