20104431413 has 4 divisors (see below), whose sum is σ = 21932107008. Its totient is φ = 18276755820.

The previous prime is 20104431341. The next prime is 20104431419. The reversal of 20104431413 is 31413440102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20104431413 - 2⁸ = 20104431157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104431419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913837781 + ... + 913837802.

It is an arithmetic number, because the mean of its divisors is an integer number (5483026752).

Almost surely, 2^20104431413 is an apocalyptic number.

It is an amenable number.

20104431413 is a deficient number, since it is larger than the sum of its proper divisors (1827675595).

20104431413 is a wasteful number, since it uses less digits than its factorization.

20104431413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827675594.

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

Adding to 20104431413 its reverse (31413440102), we get a palindrome (51517871515).

The spelling of 20104431413 in words is "twenty billion, one hundred four million, four hundred thirty-one thousand, four hundred thirteen".