20430120343343 has 4 divisors (see below), whose sum is σ = 20437718010720. Its totient is φ = 20422522675968.

The previous prime is 20430120343333. The next prime is 20430120343393. The reversal of 20430120343343 is 34334302103402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20430120343343 - 2¹⁸ = 20430120081199 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 (20430120343313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3798829655 + ... + 3798835032.

It is an arithmetic number, because the mean of its divisors is an integer number (5109429502680).

Almost surely, 2^{20430120343343} is an apocalyptic number.

20430120343343 is a deficient number, since it is larger than the sum of its proper divisors (7597667377).

20430120343343 is an equidigital number, since it uses as much as digits as its factorization.

20430120343343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597667376.

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 20430120343343 its reverse (34334302103402), we get a palindrome (54764422446745).

The spelling of 20430120343343 in words is "twenty trillion, four hundred thirty billion, one hundred twenty million, three hundred forty-three thousand, three hundred forty-three".