201243323 has 4 divisors (see below), whose sum is σ = 204077808. Its totient is φ = 198408840.

The previous prime is 201243313. The next prime is 201243347. The reversal of 201243323 is 323342102.

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 201243323 - 2²⁰ = 200194747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201243295 and 201243304.

It is not an unprimeable number, because it can be changed into a prime (201243313) 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, 1417136 + ... + 1417277.

It is an arithmetic number, because the mean of its divisors is an integer number (51019452).

Almost surely, 2^201243323 is an apocalyptic number.

201243323 is a deficient number, since it is larger than the sum of its proper divisors (2834485).

201243323 is an equidigital number, since it uses as much as digits as its factorization.

201243323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834484.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 201243323 is about 14186.0256238314. The cubic root of 201243323 is about 586.0128779489.

Adding to 201243323 its reverse (323342102), we get a palindrome (524585425).

The spelling of 201243323 in words is "two hundred one million, two hundred forty-three thousand, three hundred twenty-three".