20031212331330 has 64 divisors (see below), whose sum is σ = 48416682918528. Its totient is φ = 5303731829760.

The previous prime is 20031212331311. The next prime is 20031212331341. The reversal of 20031212331330 is 3313321213002.

It is a self number, because there is not a number n which added to its sum of digits gives 20031212331330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4847889 + ... + 7972731.

It is an arithmetic number, because the mean of its divisors is an integer number (756510670602).

Almost surely, 2^{20031212331330} is an apocalyptic number.

20031212331330 is an abundant number, since it is smaller than the sum of its proper divisors (28385470587198).

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

20031212331330 is a wasteful number, since it uses less digits than its factorization.

20031212331330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126371.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 20031212331330 its reverse (3313321213002), we get a palindrome (23344533544332).

The spelling of 20031212331330 in words is "twenty trillion, thirty-one billion, two hundred twelve million, three hundred thirty-one thousand, three hundred thirty".