20343115105 has 8 divisors (see below), whose sum is σ = 24598088064. Its totient is φ = 16150258800.

The previous prime is 20343115033. The next prime is 20343115109. The reversal of 20343115105 is 50151134302.

It is a happy number.

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

It is not a de Polignac number, because 20343115105 - 2²⁵ = 20309560673 is a prime.

It is a super-2 number, since 2×20343115105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20343115105.

It is not an unprimeable number, because it can be changed into a prime (20343115109) 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 7 ways as a sum of consecutive naturals, for example, 15528441 + ... + 15529750.

It is an arithmetic number, because the mean of its divisors is an integer number (3074761008).

Almost surely, 2^20343115105 is an apocalyptic number.

It is an amenable number.

20343115105 is a deficient number, since it is larger than the sum of its proper divisors (4254972959).

20343115105 is a wasteful number, since it uses less digits than its factorization.

20343115105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31058327.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 20343115105 its reverse (50151134302), we get a palindrome (70494249407).

The spelling of 20343115105 in words is "twenty billion, three hundred forty-three million, one hundred fifteen thousand, one hundred five".