20320312103 has 12 divisors (see below), whose sum is σ = 25456215960. Its totient is φ = 16077609072.

The previous prime is 20320312087. The next prime is 20320312141. The reversal of 20320312103 is 30121302302.

It is not a de Polignac number, because 20320312103 - 2⁴ = 20320312087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320312003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15949373 + ... + 15950646.

It is an arithmetic number, because the mean of its divisors is an integer number (2121351330).

Almost surely, 2^20320312103 is an apocalyptic number.

20320312103 is a deficient number, since it is larger than the sum of its proper divisors (5135903857).

20320312103 is a wasteful number, since it uses less digits than its factorization.

20320312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31900046 (or 31900039 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20320312103 its reverse (30121302302), we get a palindrome (50441614405).

The spelling of 20320312103 in words is "twenty billion, three hundred twenty million, three hundred twelve thousand, one hundred three".