323140243 has 4 divisors (see below), whose sum is σ = 334283040. Its totient is φ = 311997448.

The previous prime is 323140231. The next prime is 323140247. The reversal of 323140243 is 342041323.

It is a happy number.

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 323140243 - 2⁵ = 323140211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323140247) 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, 5571355 + ... + 5571412.

It is an arithmetic number, because the mean of its divisors is an integer number (83570760).

Almost surely, 2^323140243 is an apocalyptic number.

323140243 is a deficient number, since it is larger than the sum of its proper divisors (11142797).

323140243 is a wasteful number, since it uses less digits than its factorization.

323140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11142796.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 323140243 is about 17976.1019968179. The cubic root of 323140243 is about 686.2204912754.

Adding to 323140243 its reverse (342041323), we get a palindrome (665181566).

The spelling of 323140243 in words is "three hundred twenty-three million, one hundred forty thousand, two hundred forty-three".