243323241 has 32 divisors (see below), whose sum is σ = 378950400. Its totient is φ = 136012800.

The previous prime is 243323189. The next prime is 243323251. The reversal of 243323241 is 142323342.

It is not a de Polignac number, because 243323241 - 2¹⁰ = 243322217 is a prime.

It is a super-2 number, since 2×243323241² = 118412399221488162, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243323251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188125 + ... + 189413.

It is an arithmetic number, because the mean of its divisors is an integer number (11842200).

Almost surely, 2^243323241 is an apocalyptic number.

243323241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243323241 is a deficient number, since it is larger than the sum of its proper divisors (135627159).

243323241 is a wasteful number, since it uses less digits than its factorization.

243323241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489.

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

The square root of 243323241 is about 15598.8217824296. The cubic root of 243323241 is about 624.3017191233.

Adding to 243323241 its reverse (142323342), we get a palindrome (385646583).

The spelling of 243323241 in words is "two hundred forty-three million, three hundred twenty-three thousand, two hundred forty-one".