20203312312 has 32 divisors (see below), whose sum is σ = 41403381120. Its totient is φ = 9200747520.

The previous prime is 20203312271. The next prime is 20203312331. The reversal of 20203312312 is 21321330202.

It is a self number, because there is not a number n which added to its sum of digits gives 20203312312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2391813 + ... + 2400244.

It is an arithmetic number, because the mean of its divisors is an integer number (1293855660).

Almost surely, 2^20203312312 is an apocalyptic number.

It is an amenable number.

20203312312 is an abundant number, since it is smaller than the sum of its proper divisors (21200068808).

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

20203312312 is a wasteful number, since it uses less digits than its factorization.

20203312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792111 (or 4792107 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20203312312 its reverse (21321330202), we get a palindrome (41524642514).

The spelling of 20203312312 in words is "twenty billion, two hundred three million, three hundred twelve thousand, three hundred twelve".