243213534033151 has 4 divisors (see below), whose sum is σ = 265323855308904. Its totient is φ = 221103212757400.

The previous prime is 243213534033143. The next prime is 243213534033257. The reversal of 243213534033151 is 151330435312342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243213534033151 - 2³ = 243213534033143 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243213534033101) 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, 11055160637860 + ... + 11055160637881.

It is an arithmetic number, because the mean of its divisors is an integer number (66330963827226).

Almost surely, 2^{243213534033151} is an apocalyptic number.

243213534033151 is a deficient number, since it is larger than the sum of its proper divisors (22110321275753).

243213534033151 is a wasteful number, since it uses less digits than its factorization.

243213534033151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22110321275752.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 243213534033151 its reverse (151330435312342), we get a palindrome (394543969345493).

The spelling of 243213534033151 in words is "two hundred forty-three trillion, two hundred thirteen billion, five hundred thirty-four million, thirty-three thousand, one hundred fifty-one".