201343042123 has 8 divisors (see below), whose sum is σ = 213049681920. Its totient is φ = 189747366120.

The previous prime is 201343042099. The next prime is 201343042141. The reversal of 201343042123 is 321240343102.

201343042123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201343042123 - 2⁵ = 201343042091 is a prime.

It is a super-2 number, since 2×201343042123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201343042723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27737215 + ... + 27744472.

It is an arithmetic number, because the mean of its divisors is an integer number (26631210240).

Almost surely, 2^201343042123 is an apocalyptic number.

201343042123 is a deficient number, since it is larger than the sum of its proper divisors (11706639797).

201343042123 is a wasteful number, since it uses less digits than its factorization.

201343042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55481897.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 201343042123 its reverse (321240343102), we get a palindrome (522583385225).

The spelling of 201343042123 in words is "two hundred one billion, three hundred forty-three million, forty-two thousand, one hundred twenty-three".