243331141 has 4 divisors (see below), whose sum is σ = 251721900. Its totient is φ = 234940384.

The previous prime is 243331097. The next prime is 243331147. The reversal of 243331141 is 141133342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109118916 + 134212225 = 10446^2 + 11585^2 .

It is a cyclic number.

It is not a de Polignac number, because 243331141 - 2²⁵ = 209776709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243331147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4195336 + ... + 4195393.

It is an arithmetic number, because the mean of its divisors is an integer number (62930475).

Almost surely, 2^243331141 is an apocalyptic number.

It is an amenable number.

243331141 is a deficient number, since it is larger than the sum of its proper divisors (8390759).

243331141 is an equidigital number, since it uses as much as digits as its factorization.

243331141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8390758.

The product of its digits is 864, while the sum is 22.

The square root of 243331141 is about 15599.0750046277. The cubic root of 243331141 is about 624.3084754723.

Adding to 243331141 its reverse (141133342), we get a palindrome (384464483).

The spelling of 243331141 in words is "two hundred forty-three million, three hundred thirty-one thousand, one hundred forty-one".