20431330212 has 48 divisors (see below), whose sum is σ = 49871203200. Its totient is φ = 6501707520.

The previous prime is 20431330141. The next prime is 20431330219. The reversal of 20431330212 is 21203313402.

It is not an unprimeable number, because it can be changed into a prime (20431330219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298864 + ... + 360807.

It is an arithmetic number, because the mean of its divisors is an integer number (1038983400).

Almost surely, 2^20431330212 is an apocalyptic number.

It is an amenable number.

20431330212 is an abundant number, since it is smaller than the sum of its proper divisors (29439872988).

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

20431330212 is a wasteful number, since it uses less digits than its factorization.

20431330212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659796 (or 659794 counting only the distinct ones).

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

Adding to 20431330212 its reverse (21203313402), we get a palindrome (41634643614).

The spelling of 20431330212 in words is "twenty billion, four hundred thirty-one million, three hundred thirty thousand, two hundred twelve".