20100203312 has 40 divisors (see below), whose sum is σ = 44554532256. Its totient is φ = 8605287936.

The previous prime is 20100203293. The next prime is 20100203339. The reversal of 20100203312 is 21330200102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 7 ways as a sum of consecutive naturals, for example, 12578 + ... + 200894.

Almost surely, 2^20100203312 is an apocalyptic number.

It is an amenable number.

20100203312 is an abundant number, since it is smaller than the sum of its proper divisors (24454328944).

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

20100203312 is a wasteful number, since it uses less digits than its factorization.

20100203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189285 (or 189279 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20100203312 its reverse (21330200102), we get a palindrome (41430403414).

The spelling of 20100203312 in words is "twenty billion, one hundred million, two hundred three thousand, three hundred twelve".