243422313 has 4 divisors (see below), whose sum is σ = 324563088. Its totient is φ = 162281540.

The previous prime is 243422299. The next prime is 243422321. The reversal of 243422313 is 313224342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243422313 - 2¹³ = 243414121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243422383) 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, 40570383 + ... + 40570388.

It is an arithmetic number, because the mean of its divisors is an integer number (81140772).

Almost surely, 2^243422313 is an apocalyptic number.

It is an amenable number.

243422313 is a deficient number, since it is larger than the sum of its proper divisors (81140775).

243422313 is an equidigital number, since it uses as much as digits as its factorization.

243422313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81140774.

The product of its digits is 3456, while the sum is 24.

The square root of 243422313 is about 15601.9970837069. The cubic root of 243422313 is about 624.3864382910.

Adding to 243422313 its reverse (313224342), we get a palindrome (556646655).

The spelling of 243422313 in words is "two hundred forty-three million, four hundred twenty-two thousand, three hundred thirteen".