20031103212 has 48 divisors (see below), whose sum is σ = 46951736832. Its totient is φ = 6646737280.

The previous prime is 20031103207. The next prime is 20031103241. The reversal of 20031103212 is 21230113002.

It is a junction number, because it is equal to n+sod(n) for n = 20031103191 and 20031103200.

It is an unprimeable number.

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, 3195193 + ... + 3201455.

It is an arithmetic number, because the mean of its divisors is an integer number (978161184).

Almost surely, 2^20031103212 is an apocalyptic number.

It is an amenable number.

20031103212 is an abundant number, since it is smaller than the sum of its proper divisors (26920633620).

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

20031103212 is a wasteful number, since it uses less digits than its factorization.

20031103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438 (or 7436 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20031103212 its reverse (21230113002), we get a palindrome (41261216214).

The spelling of 20031103212 in words is "twenty billion, thirty-one million, one hundred three thousand, two hundred twelve".