243434233213 has 8 divisors (see below), whose sum is σ = 243573917688. Its totient is φ = 243294591744.

The previous prime is 243434233177. The next prime is 243434233249. The reversal of 243434233213 is 312332434342.

It is an interprime number because it is at equal distance from previous prime (243434233177) and next prime (243434233249).

It can be written as a sum of positive squares in 4 ways, for example, as 609003684 + 242825229529 = 24678^2 + 492773^2 .

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-243434233213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243434233513) 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, 25801945 + ... + 25811377.

It is an arithmetic number, because the mean of its divisors is an integer number (30446739711).

Almost surely, 2^243434233213 is an apocalyptic number.

It is an amenable number.

243434233213 is a deficient number, since it is larger than the sum of its proper divisors (139684475).

243434233213 is an equidigital number, since it uses as much as digits as its factorization.

243434233213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21503.

The product of its digits is 124416, while the sum is 34.

Adding to 243434233213 its reverse (312332434342), we get a palindrome (555766667555).

The spelling of 243434233213 in words is "two hundred forty-three billion, four hundred thirty-four million, two hundred thirty-three thousand, two hundred thirteen".