20113331232 has 24 divisors (see below), whose sum is σ = 52797494736. Its totient is φ = 6704443712.

The previous prime is 20113331197. The next prime is 20113331233. The reversal of 20113331232 is 23213331102.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 20113331199 and 20113331208.

It is not an unprimeable number, because it can be changed into a prime (20113331233) 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, 104756838 + ... + 104757029.

It is an arithmetic number, because the mean of its divisors is an integer number (2199895614).

Almost surely, 2^20113331232 is an apocalyptic number.

It is an amenable number.

20113331232 is an abundant number, since it is smaller than the sum of its proper divisors (32684163504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113331232 is a wasteful number, since it uses less digits than its factorization.

20113331232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209513880 (or 209513872 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20113331232 its reverse (23213331102), we get a palindrome (43326662334).

The spelling of 20113331232 in words is "twenty billion, one hundred thirteen million, three hundred thirty-one thousand, two hundred thirty-two".