243440241133 has 4 divisors (see below), whose sum is σ = 243444940480. Its totient is φ = 243435541788.

The previous prime is 243440241127. The next prime is 243440241139. The reversal of 243440241133 is 331142044342.

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: 331142044342 = 2 ⋅165571022171.

It is an interprime number because it is at equal distance from previous prime (243440241127) and next prime (243440241139).

It is a cyclic number.

It is not a de Polignac number, because 243440241133 - 2¹⁷ = 243440110061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243440241095 and 243440241104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243440241139) 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, 2271093 + ... + 2375866.

It is an arithmetic number, because the mean of its divisors is an integer number (60861235120).

Almost surely, 2^243440241133 is an apocalyptic number.

It is an amenable number.

243440241133 is a deficient number, since it is larger than the sum of its proper divisors (4699347).

243440241133 is an equidigital number, since it uses as much as digits as its factorization.

243440241133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699346.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 243440241133 its reverse (331142044342), we get a palindrome (574582285475).

The spelling of 243440241133 in words is "two hundred forty-three billion, four hundred forty million, two hundred forty-one thousand, one hundred thirty-three".