201342232123 has 4 divisors (see below), whose sum is σ = 201350233528. Its totient is φ = 201334230720.

The previous prime is 201342232051. The next prime is 201342232141. The reversal of 201342232123 is 321232243102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321232243102 = 2 ⋅160616121551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201342232123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201342232183) 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, 3962838 + ... + 4013323.

It is an arithmetic number, because the mean of its divisors is an integer number (50337558382).

Almost surely, 2^201342232123 is an apocalyptic number.

201342232123 is a deficient number, since it is larger than the sum of its proper divisors (8001405).

201342232123 is an equidigital number, since it uses as much as digits as its factorization.

201342232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001404.

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

Adding to 201342232123 its reverse (321232243102), we get a palindrome (522574475225).

The spelling of 201342232123 in words is "two hundred one billion, three hundred forty-two million, two hundred thirty-two thousand, one hundred twenty-three".