20013331031020 has 24 divisors (see below), whose sum is σ = 42028319789568. Its totient is φ = 8005270579200.

The previous prime is 20013331030991. The next prime is 20013331031041. The reversal of 20013331031020 is 2013013331002.

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, 1164501 + ... + 6432940.

It is an arithmetic number, because the mean of its divisors is an integer number (1751179991232).

Almost surely, 2^{20013331031020} is an apocalyptic number.

20013331031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013331031020 is an abundant number, since it is smaller than the sum of its proper divisors (22014988758548).

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

20013331031020 is a wasteful number, since it uses less digits than its factorization.

20013331031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729161 (or 7729159 counting only the distinct ones).

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

Adding to 20013331031020 its reverse (2013013331002), we get a palindrome (22026344362022).

The spelling of 20013331031020 in words is "twenty trillion, thirteen billion, three hundred thirty-one million, thirty-one thousand, twenty".