243114321 has 4 divisors (see below), whose sum is σ = 324152432. Its totient is φ = 162076212.

The previous prime is 243114317. The next prime is 243114323. The reversal of 243114321 is 123411342.

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 not a de Polignac number, because 243114321 - 2² = 243114317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243114323) 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, 40519051 + ... + 40519056.

It is an arithmetic number, because the mean of its divisors is an integer number (81038108).

Almost surely, 2^243114321 is an apocalyptic number.

It is an amenable number.

243114321 is a deficient number, since it is larger than the sum of its proper divisors (81038111).

243114321 is an equidigital number, since it uses as much as digits as its factorization.

243114321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81038110.

The product of its digits is 576, while the sum is 21.

The square root of 243114321 is about 15592.1236847326. The cubic root of 243114321 is about 624.1229905293.

Adding to 243114321 its reverse (123411342), we get a palindrome (366525663).

The spelling of 243114321 in words is "two hundred forty-three million, one hundred fourteen thousand, three hundred twenty-one".