243434215141 has 4 divisors (see below), whose sum is σ = 262159924012. Its totient is φ = 224708506272.

The previous prime is 243434215139. The next prime is 243434215169. The reversal of 243434215141 is 141512434342.

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 122030750241 + 121403464900 = 349329^2 + 348430^2 .

It is a cyclic number.

It is not a de Polignac number, because 243434215141 - 2¹ = 243434215139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243434215097 and 243434215106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243434215111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9362854416 + ... + 9362854441.

It is an arithmetic number, because the mean of its divisors is an integer number (65539981003).

Almost surely, 2^243434215141 is an apocalyptic number.

It is an amenable number.

243434215141 is a deficient number, since it is larger than the sum of its proper divisors (18725708871).

243434215141 is a wasteful number, since it uses less digits than its factorization.

243434215141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18725708870.

The product of its digits is 46080, while the sum is 34.

Adding to 243434215141 its reverse (141512434342), we get a palindrome (384946649483).

The spelling of 243434215141 in words is "two hundred forty-three billion, four hundred thirty-four million, two hundred fifteen thousand, one hundred forty-one".