20343105 has 24 divisors (see below), whose sum is σ = 35485632. Its totient is φ = 10780704.

The previous prime is 20343097. The next prime is 20343137. The reversal of 20343105 is 50134302.

It is not a de Polignac number, because 20343105 - 2³ = 20343097 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6162 + ... + 8868.

It is an arithmetic number, because the mean of its divisors is an integer number (1478568).

Almost surely, 2^20343105 is an apocalyptic number.

It is an amenable number.

20343105 is a deficient number, since it is larger than the sum of its proper divisors (15142527).

20343105 is a wasteful number, since it uses less digits than its factorization.

20343105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885 (or 2882 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20343105 is about 4510.3331362550. Note that the first 3 decimals coincide. The cubic root of 20343105 is about 272.9851861704.

Adding to 20343105 its reverse (50134302), we get a palindrome (70477407).

The spelling of 20343105 in words is "twenty million, three hundred forty-three thousand, one hundred five".