20301343243 has 4 divisors (see below), whose sum is σ = 20301790840. Its totient is φ = 20300895648.

The previous prime is 20301343207. The next prime is 20301343259. The reversal of 20301343243 is 34234310302.

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 20301343243 - 2¹³ = 20301335051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20301341243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146973 + ... + 249406.

It is an arithmetic number, because the mean of its divisors is an integer number (5075447710).

Almost surely, 2^20301343243 is an apocalyptic number.

20301343243 is a deficient number, since it is larger than the sum of its proper divisors (447597).

20301343243 is an equidigital number, since it uses as much as digits as its factorization.

20301343243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447596.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20301343243 its reverse (34234310302), we get a palindrome (54535653545).

The spelling of 20301343243 in words is "twenty billion, three hundred one million, three hundred forty-three thousand, two hundred forty-three".