20320102143 has 48 divisors (see below), whose sum is σ = 32196982272. Its totient is φ = 12247200000.

The previous prime is 20320102093. The next prime is 20320102171. The reversal of 20320102143 is 34120102302.

It is not a de Polignac number, because 20320102143 - 2¹² = 20320098047 is a prime.

It is a super-2 number, since 2×20320102143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320102343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25055208 + ... + 25056018.

It is an arithmetic number, because the mean of its divisors is an integer number (670770464).

Almost surely, 2^20320102143 is an apocalyptic number.

20320102143 is a deficient number, since it is larger than the sum of its proper divisors (11876880129).

20320102143 is a wasteful number, since it uses less digits than its factorization.

20320102143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20320102143 its reverse (34120102302), we get a palindrome (54440204445).

The spelling of 20320102143 in words is "twenty billion, three hundred twenty million, one hundred two thousand, one hundred forty-three".