20212331232 has 24 divisors (see below), whose sum is σ = 53057369736. Its totient is φ = 6737443712.

The previous prime is 20212331213. The next prime is 20212331239. The reversal of 20212331232 is 23213321202.

It is a happy number.

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 = 20212331199 and 20212331208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212331239) 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, 105272463 + ... + 105272654.

It is an arithmetic number, because the mean of its divisors is an integer number (2210723739).

Almost surely, 2^20212331232 is an apocalyptic number.

It is an amenable number.

20212331232 is an abundant number, since it is smaller than the sum of its proper divisors (32845038504).

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

20212331232 is a wasteful number, since it uses less digits than its factorization.

20212331232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210545130 (or 210545122 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20212331232 its reverse (23213321202), we get a palindrome (43425652434).

The spelling of 20212331232 in words is "twenty billion, two hundred twelve million, three hundred thirty-one thousand, two hundred thirty-two".