243240134313 has 16 divisors (see below), whose sum is σ = 357779160000. Its totient is φ = 145761876480.

The previous prime is 243240134279. The next prime is 243240134317. The reversal of 243240134313 is 313431042342.

It is a happy number.

It is not a de Polignac number, because 243240134313 - 2⁸ = 243240134057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243240134317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41406688 + ... + 41412561.

It is an arithmetic number, because the mean of its divisors is an integer number (22361197500).

Almost surely, 2^243240134313 is an apocalyptic number.

It is an amenable number.

243240134313 is a deficient number, since it is larger than the sum of its proper divisors (114539025687).

243240134313 is a wasteful number, since it uses less digits than its factorization.

243240134313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82819352.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 243240134313 its reverse (313431042342), we get a palindrome (556671176655).

The spelling of 243240134313 in words is "two hundred forty-three billion, two hundred forty million, one hundred thirty-four thousand, three hundred thirteen".