20013131204 has 24 divisors (see below), whose sum is σ = 40454352288. Its totient is φ = 8561767040.

The previous prime is 20013131189. The next prime is 20013131213. The reversal of 20013131204 is 40213131002.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13377014 + ... + 13378509.

It is an arithmetic number, because the mean of its divisors is an integer number (1685598012).

Almost surely, 2^20013131204 is an apocalyptic number.

It is an amenable number.

20013131204 is an abundant number, since it is smaller than the sum of its proper divisors (20441221084).

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

20013131204 is a wasteful number, since it uses less digits than its factorization.

20013131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26755555 (or 26755553 counting only the distinct ones).

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

Adding to 20013131204 its reverse (40213131002), we get a palindrome (60226262206).

The spelling of 20013131204 in words is "twenty billion, thirteen million, one hundred thirty-one thousand, two hundred four".