20001031232 has 224 divisors, whose sum is σ = 50509992960. Its totient is φ = 7647805440.

The previous prime is 20001031213. The next prime is 20001031249. The reversal of 20001031232 is 23213010002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24361382 + ... + 24362202.

It is an arithmetic number, because the mean of its divisors is an integer number (225491040).

Almost surely, 2^20001031232 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 20001031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25254996480).

20001031232 is an abundant number, since it is smaller than the sum of its proper divisors (30508961728).

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

20001031232 is a wasteful number, since it uses less digits than its factorization.

20001031232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20001031232 its reverse (23213010002), we get a palindrome (43214041234).

The spelling of 20001031232 in words is "twenty billion, one million, thirty-one thousand, two hundred thirty-two".