243323115 has 16 divisors (see below), whose sum is σ = 444933888. Its totient is φ = 111233376.

The previous prime is 243323077. The next prime is 243323131. The reversal of 243323115 is 511323342.

It is not a de Polignac number, because 243323115 - 2¹⁴ = 243306731 is a prime.

It is a super-2 number, since 2×243323115² = 118412276586606450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158577 + ... + 1158786.

It is an arithmetic number, because the mean of its divisors is an integer number (27808368).

Almost surely, 2^243323115 is an apocalyptic number.

243323115 is a deficient number, since it is larger than the sum of its proper divisors (201610773).

243323115 is a wasteful number, since it uses less digits than its factorization.

243323115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317378.

The product of its digits is 2160, while the sum is 24.

The square root of 243323115 is about 15598.8177436625. The cubic root of 243323115 is about 624.3016113626.

Adding to 243323115 its reverse (511323342), we get a palindrome (754646457).

The spelling of 243323115 in words is "two hundred forty-three million, three hundred twenty-three thousand, one hundred fifteen".