20131304134020 has 48 divisors (see below), whose sum is σ = 57046779921600. Its totient is φ = 5303668878976.

The previous prime is 20131304133961. The next prime is 20131304134099. The reversal of 20131304134020 is 2043140313102.

It is a happy number.

It is a super-2 number, since 2×20131304134020² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2021210295 + ... + 2021220254.

It is an arithmetic number, because the mean of its divisors is an integer number (1188474581700).

Almost surely, 2^{20131304134020} is an apocalyptic number.

20131304134020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131304134020 is an abundant number, since it is smaller than the sum of its proper divisors (36915475787580).

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

20131304134020 is a wasteful number, since it uses less digits than its factorization.

20131304134020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042430644 (or 4042430642 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20131304134020 its reverse (2043140313102), we get a palindrome (22174444447122).

The spelling of 20131304134020 in words is "twenty trillion, one hundred thirty-one billion, three hundred four million, one hundred thirty-four thousand, twenty".