20031000133312 has 84 divisors (see below), whose sum is σ = 47833087600080. Its totient is φ = 8288689672704.

The previous prime is 20031000133289. The next prime is 20031000133343. The reversal of 20031000133312 is 21333100013002.

It is a self number, because there is not a number n which added to its sum of digits gives 20031000133312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110037268 + ... + 110219155.

Almost surely, 2^{20031000133312} is an apocalyptic number.

It is an amenable number.

20031000133312 is an abundant number, since it is smaller than the sum of its proper divisors (27802087466768).

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

20031000133312 is a wasteful number, since it uses less digits than its factorization.

20031000133312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220256478 (or 220256461 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20031000133312 its reverse (21333100013002), we get a palindrome (41364100146314).

The spelling of 20031000133312 in words is "twenty trillion, thirty-one billion, one hundred thirty-three thousand, three hundred twelve".