243442221134 has 16 divisors (see below), whose sum is σ = 417586063488. Its totient is φ = 104268245112.

The previous prime is 243442221091. The next prime is 243442221161. The reversal of 243442221134 is 431122244342.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243442221134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5321024 + ... + 5366579.

It is an arithmetic number, because the mean of its divisors is an integer number (26099128968).

Almost surely, 2^243442221134 is an apocalyptic number.

243442221134 is a deficient number, since it is larger than the sum of its proper divisors (174143842354).

243442221134 is a wasteful number, since it uses less digits than its factorization.

243442221134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689239.

The product of its digits is 36864, while the sum is 32.

Adding to 243442221134 its reverse (431122244342), we get a palindrome (674564465476).

The spelling of 243442221134 in words is "two hundred forty-three billion, four hundred forty-two million, two hundred twenty-one thousand, one hundred thirty-four".