243301313 has 4 divisors (see below), whose sum is σ = 243364608. Its totient is φ = 243238020.

The previous prime is 243301273. The next prime is 243301349. The reversal of 243301313 is 313103342.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313103342 = 2 ⋅156551671.

It is a cyclic number.

It is not a de Polignac number, because 243301313 - 2⁶ = 243301249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243321313) 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 3 ways as a sum of consecutive naturals, for example, 25481 + ... + 33702.

It is an arithmetic number, because the mean of its divisors is an integer number (60841152).

Almost surely, 2^243301313 is an apocalyptic number.

It is an amenable number.

243301313 is a deficient number, since it is larger than the sum of its proper divisors (63295).

243301313 is an equidigital number, since it uses as much as digits as its factorization.

243301313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63294.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 243301313 is about 15598.1188929948. The cubic root of 243301313 is about 624.2829647847.

Adding to 243301313 its reverse (313103342), we get a palindrome (556404655).

The spelling of 243301313 in words is "two hundred forty-three million, three hundred one thousand, three hundred thirteen".