20104443131 has 8 divisors (see below), whose sum is σ = 20204893200. Its totient is φ = 20004042240.

The previous prime is 20104443103. The next prime is 20104443137. The reversal of 20104443131 is 13134440102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104443131 is a prime.

It is a super-2 number, since 2×20104443131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20104443097 and 20104443106.

It is not an unprimeable number, because it can be changed into a prime (20104443137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021835 + ... + 1041323.

It is an arithmetic number, because the mean of its divisors is an integer number (2525611650).

Almost surely, 2^20104443131 is an apocalyptic number.

20104443131 is a deficient number, since it is larger than the sum of its proper divisors (100450069).

20104443131 is a wasteful number, since it uses less digits than its factorization.

20104443131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24589.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20104443131 its reverse (13134440102), we get a palindrome (33238883233).

The spelling of 20104443131 in words is "twenty billion, one hundred four million, four hundred forty-three thousand, one hundred thirty-one".