20313220331100 has 72 divisors (see below), whose sum is σ = 58801080739968. Its totient is φ = 5414263064000.

The previous prime is 20313220331093. The next prime is 20313220331119. The reversal of 20313220331100 is 113302231302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15595926 + ... + 16848125.

It is an arithmetic number, because the mean of its divisors is an integer number (816681676944).

Almost surely, 2^{20313220331100} is an apocalyptic number.

20313220331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313220331100 is an abundant number, since it is smaller than the sum of its proper divisors (38487860408868).

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

20313220331100 is a wasteful number, since it uses less digits than its factorization.

20313220331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32446155 (or 32446148 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20313220331100 its reverse (113302231302), we get a palindrome (20426522562402).

The spelling of 20313220331100 in words is "twenty trillion, three hundred thirteen billion, two hundred twenty million, three hundred thirty-one thousand, one hundred".