243322313 has 24 divisors (see below), whose sum is σ = 279858240. Its totient is φ = 210999360.

The previous prime is 243322307. The next prime is 243322319. The reversal of 243322313 is 313223342.

It is an interprime number because it is at equal distance from previous prime (243322307) and next prime (243322319).

It is not a de Polignac number, because 243322313 - 2¹² = 243318217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (243322319) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 228803 + ... + 229863.

It is an arithmetic number, because the mean of its divisors is an integer number (11660760).

Almost surely, 2^243322313 is an apocalyptic number.

243322313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

243322313 is a deficient number, since it is larger than the sum of its proper divisors (36535927).

243322313 is a wasteful number, since it uses less digits than its factorization.

243322313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1156 counting only the distinct ones).

The product of its digits is 2592, while the sum is 23.

The square root of 243322313 is about 15598.7920365649. The cubic root of 243322313 is about 624.3009254565.

Adding to 243322313 its reverse (313223342), we get a palindrome (556545655).

The spelling of 243322313 in words is "two hundred forty-three million, three hundred twenty-two thousand, three hundred thirteen".