20424432343 has 4 divisors (see below), whose sum is σ = 23342208400. Its totient is φ = 17506656288.

The previous prime is 20424432319. The next prime is 20424432373. The reversal of 20424432343 is 34323442402.

It is a happy number.

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 20424432343 - 2⁹ = 20424431831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424432313) 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, 1458888018 + ... + 1458888031.

It is an arithmetic number, because the mean of its divisors is an integer number (5835552100).

Almost surely, 2^20424432343 is an apocalyptic number.

20424432343 is a deficient number, since it is larger than the sum of its proper divisors (2917776057).

20424432343 is an equidigital number, since it uses as much as digits as its factorization.

20424432343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917776056.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 20424432343 its reverse (34323442402), we get a palindrome (54747874745).

The spelling of 20424432343 in words is "twenty billion, four hundred twenty-four million, four hundred thirty-two thousand, three hundred forty-three".