20403103112 has 64 divisors (see below), whose sum is σ = 46878912000. Its totient is φ = 8125618176.

The previous prime is 20403103073. The next prime is 20403103141. The reversal of 20403103112 is 21130130402.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60437 + ... + 210852.

It is an arithmetic number, because the mean of its divisors is an integer number (732483000).

Almost surely, 2^20403103112 is an apocalyptic number.

It is an amenable number.

20403103112 is an abundant number, since it is smaller than the sum of its proper divisors (26475808888).

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

20403103112 is a wasteful number, since it uses less digits than its factorization.

20403103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271398 (or 271394 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20403103112 its reverse (21130130402), we get a palindrome (41533233514).

The spelling of 20403103112 in words is "twenty billion, four hundred three million, one hundred three thousand, one hundred twelve".