20130231120020 has 24 divisors (see below), whose sum is σ = 48312554688384. Its totient is φ = 6901793526816.

The previous prime is 20130231120011. The next prime is 20130231120047. The reversal of 20130231120020 is 2002113203102.

It is a congruent number.

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, 71893682432 + ... + 71893682711.

It is an arithmetic number, because the mean of its divisors is an integer number (2013023112016).

Almost surely, 2^{20130231120020} is an apocalyptic number.

20130231120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130231120020 is an abundant number, since it is smaller than the sum of its proper divisors (28182323568364).

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

20130231120020 is a wasteful number, since it uses less digits than its factorization.

20130231120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143787365159 (or 143787365157 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20130231120020 its reverse (2002113203102), we get a palindrome (22132344323122).

The spelling of 20130231120020 in words is "twenty trillion, one hundred thirty billion, two hundred thirty-one million, one hundred twenty thousand, twenty".