20103311232 has 192 divisors, whose sum is σ = 59971797600. Its totient is φ = 6458683392.

The previous prime is 20103311177. The next prime is 20103311233. The reversal of 20103311232 is 23211330102.

20103311232 is a `hidden beast` number, since 20 + 103 + 311 + 232 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103311233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4643853 + ... + 4648179.

Almost surely, 2^20103311232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20103311232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29985898800).

20103311232 is an abundant number, since it is smaller than the sum of its proper divisors (39868486368).

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

20103311232 is a wasteful number, since it uses less digits than its factorization.

20103311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493 (or 4478 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20103311232 its reverse (23211330102), we get a palindrome (43314641334).

The spelling of 20103311232 in words is "twenty billion, one hundred three million, three hundred eleven thousand, two hundred thirty-two".