201323233123 has 4 divisors (see below), whose sum is σ = 201463139520. Its totient is φ = 201183326728.

The previous prime is 201323233121. The next prime is 201323233169. The reversal of 201323233123 is 321332323102.

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 201323233123 - 2¹ = 201323233121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201323233121) 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, 69951040 + ... + 69953917.

It is an arithmetic number, because the mean of its divisors is an integer number (50365784880).

Almost surely, 2^201323233123 is an apocalyptic number.

201323233123 is a deficient number, since it is larger than the sum of its proper divisors (139906397).

201323233123 is a wasteful number, since it uses less digits than its factorization.

201323233123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139906396.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 201323233123 its reverse (321332323102), we get a palindrome (522655556225).

The spelling of 201323233123 in words is "two hundred one billion, three hundred twenty-three million, two hundred thirty-three thousand, one hundred twenty-three".