201330443123 has 4 divisors (see below), whose sum is σ = 201986242920. Its totient is φ = 200674643328.

The previous prime is 201330443107. The next prime is 201330443207. The reversal of 201330443123 is 321344033102.

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 201330443123 - 2⁴ = 201330443107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201330443092 and 201330443101.

It is not an unprimeable number, because it can be changed into a prime (201330442123) 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, 327899438 + ... + 327900051.

It is an arithmetic number, because the mean of its divisors is an integer number (50496560730).

Almost surely, 2^201330443123 is an apocalyptic number.

201330443123 is a deficient number, since it is larger than the sum of its proper divisors (655799797).

201330443123 is an equidigital number, since it uses as much as digits as its factorization.

201330443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655799796.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 201330443123 its reverse (321344033102), we get a palindrome (522674476225).

The spelling of 201330443123 in words is "two hundred one billion, three hundred thirty million, four hundred forty-three thousand, one hundred twenty-three".