243211342133 has 8 divisors (see below), whose sum is σ = 246584668056. Its totient is φ = 239839142400.

The previous prime is 243211342111. The next prime is 243211342169. The reversal of 243211342133 is 331243112342.

It can be written as a sum of positive squares in 4 ways, for example, as 20282886724 + 222928455409 = 142418^2 + 472153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243211342133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243211342096 and 243211342105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243211341133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158093 + ... + 715133.

It is an arithmetic number, because the mean of its divisors is an integer number (30823083507).

Almost surely, 2^243211342133 is an apocalyptic number.

It is an amenable number.

243211342133 is a deficient number, since it is larger than the sum of its proper divisors (3373325923).

243211342133 is an equidigital number, since it uses as much as digits as its factorization.

243211342133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563095.

The product of its digits is 10368, while the sum is 29.

Adding to 243211342133 its reverse (331243112342), we get a palindrome (574454454475).

The spelling of 243211342133 in words is "two hundred forty-three billion, two hundred eleven million, three hundred forty-two thousand, one hundred thirty-three".