100320343243 has 4 divisors (see below), whose sum is σ = 100327517368. Its totient is φ = 100313169120.

The previous prime is 100320343177. The next prime is 100320343297. The reversal of 100320343243 is 342343023001.

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 100320343243 - 2¹³ = 100320335051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100320343943) 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 3 ways as a sum of consecutive naturals, for example, 3566046 + ... + 3594067.

It is an arithmetic number, because the mean of its divisors is an integer number (25081879342).

Almost surely, 2^100320343243 is an apocalyptic number.

100320343243 is a deficient number, since it is larger than the sum of its proper divisors (7174125).

100320343243 is an equidigital number, since it uses as much as digits as its factorization.

100320343243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7174124.

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

Adding to 100320343243 its reverse (342343023001), we get a palindrome (442663366244).

The spelling of 100320343243 in words is "one hundred billion, three hundred twenty million, three hundred forty-three thousand, two hundred forty-three".