20343420343 has 8 divisors (see below), whose sum is σ = 20662650000. Its totient is φ = 20025286848.

The previous prime is 20343420329. The next prime is 20343420353. The reversal of 20343420343 is 34302434302.

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 20343420343 - 2²⁵ = 20309865911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343420353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236593 + ... + 310906.

It is an arithmetic number, because the mean of its divisors is an integer number (2582831250).

Almost surely, 2^20343420343 is an apocalyptic number.

20343420343 is a deficient number, since it is larger than the sum of its proper divisors (319229657).

20343420343 is an equidigital number, since it uses as much as digits as its factorization.

20343420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548081.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 20343420343 its reverse (34302434302), we get a palindrome (54645854645).

The spelling of 20343420343 in words is "twenty billion, three hundred forty-three million, four hundred twenty thousand, three hundred forty-three".