20104442231 has 4 divisors (see below), whose sum is σ = 20117176200. Its totient is φ = 20091708264.

The previous prime is 20104442213. The next prime is 20104442243. The reversal of 20104442231 is 13224440102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20104442231 - 2¹⁰ = 20104441207 is a prime.

It is a super-2 number, since 2×20104442231² (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 = 20104442197 and 20104442206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104442261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6364616 + ... + 6367773.

It is an arithmetic number, because the mean of its divisors is an integer number (5029294050).

Almost surely, 2^20104442231 is an apocalyptic number.

20104442231 is a deficient number, since it is larger than the sum of its proper divisors (12733969).

20104442231 is a wasteful number, since it uses less digits than its factorization.

20104442231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12733968.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20104442231 its reverse (13224440102), we get a palindrome (33328882333).

The spelling of 20104442231 in words is "twenty billion, one hundred four million, four hundred forty-two thousand, two hundred thirty-one".