20031312103 has 8 divisors (see below), whose sum is σ = 21921279120. Its totient is φ = 18152834880.

The previous prime is 20031312089. The next prime is 20031312107. The reversal of 20031312103 is 30121313002.

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 20031312103 - 2²⁹ = 19494441191 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 (20031312107) 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 7 ways as a sum of consecutive naturals, for example, 2868798 + ... + 2875771.

It is an arithmetic number, because the mean of its divisors is an integer number (2740159890).

Almost surely, 2^20031312103 is an apocalyptic number.

20031312103 is a deficient number, since it is larger than the sum of its proper divisors (1889967017).

20031312103 is a wasteful number, since it uses less digits than its factorization.

20031312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744897.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20031312103 its reverse (30121313002), we get a palindrome (50152625105).

The spelling of 20031312103 in words is "twenty billion, thirty-one million, three hundred twelve thousand, one hundred three".