20001124343 has 4 divisors (see below), whose sum is σ = 20001426000. Its totient is φ = 20000822688.

The previous prime is 20001124303. The next prime is 20001124349. The reversal of 20001124343 is 34342110002.

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 20001124343 - 2¹⁸ = 20000862199 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 (20001124349) 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, 3218 + ... + 200031.

It is an arithmetic number, because the mean of its divisors is an integer number (5000356500).

Almost surely, 2^20001124343 is an apocalyptic number.

20001124343 is a deficient number, since it is larger than the sum of its proper divisors (301657).

20001124343 is an equidigital number, since it uses as much as digits as its factorization.

20001124343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301656.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20001124343 its reverse (34342110002), we get a palindrome (54343234345).

The spelling of 20001124343 in words is "twenty billion, one million, one hundred twenty-four thousand, three hundred forty-three".