201543144323 has 8 divisors (see below), whose sum is σ = 204983308800. Its totient is φ = 198103785928.

The previous prime is 201543144311. The next prime is 201543144331. The reversal of 201543144323 is 323441345102.

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

It is a cyclic number.

It is not a de Polignac number, because 201543144323 - 2⁸ = 201543144067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201543144323.

It is not an unprimeable number, because it can be changed into a prime (201543144623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313958 + ... + 708276.

It is an arithmetic number, because the mean of its divisors is an integer number (25622913600).

Almost surely, 2^201543144323 is an apocalyptic number.

201543144323 is a deficient number, since it is larger than the sum of its proper divisors (3440164477).

201543144323 is an equidigital number, since it uses as much as digits as its factorization.

201543144323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403041.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 201543144323 its reverse (323441345102), we get a palindrome (524984489425).

The spelling of 201543144323 in words is "two hundred one billion, five hundred forty-three million, one hundred forty-four thousand, three hundred twenty-three".