20303012312 has 64 divisors (see below), whose sum is σ = 42701709600. Its totient is φ = 8971223040.

The previous prime is 20303012299. The next prime is 20303012321. The reversal of 20303012312 is 21321030302.

It is a congruent number.

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, 488408 + ... + 528344.

Almost surely, 2^20303012312 is an apocalyptic number.

20303012312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20303012312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21350854800).

20303012312 is an abundant number, since it is smaller than the sum of its proper divisors (22398697288).

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

20303012312 is a wasteful number, since it uses less digits than its factorization.

20303012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40116 (or 40112 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20303012312 its reverse (21321030302), we get a palindrome (41624042614).

The spelling of 20303012312 in words is "twenty billion, three hundred three million, twelve thousand, three hundred twelve".