20320042103 has 8 divisors (see below), whose sum is σ = 21533435280. Its totient is φ = 19140829120.

The previous prime is 20320042091. The next prime is 20320042109. The reversal of 20320042103 is 30124002302.

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

It is a cyclic number.

It is not a de Polignac number, because 20320042103 - 2¹⁸ = 20319779959 is a prime.

It is a super-2 number, since 2×20320042103² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320042109) 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, 8543825 + ... + 8546202.

It is an arithmetic number, because the mean of its divisors is an integer number (2691679410).

Almost surely, 2^20320042103 is an apocalyptic number.

20320042103 is a deficient number, since it is larger than the sum of its proper divisors (1213393177).

20320042103 is a wasteful number, since it uses less digits than its factorization.

20320042103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17090097.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20320042103 its reverse (30124002302), we get a palindrome (50444044405).

The spelling of 20320042103 in words is "twenty billion, three hundred twenty million, forty-two thousand, one hundred three".