243234263245 has 8 divisors (see below), whose sum is σ = 291883770360. Its totient is φ = 194585640960.

The previous prime is 243234263243. The next prime is 243234263249. The reversal of 243234263245 is 542362432342.

It can be written as a sum of positive squares in 4 ways, for example, as 65625118276 + 177609144969 = 256174^2 + 421437^2 .

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

It is not a de Polignac number, because 243234263245 - 2¹ = 243234263243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243234263198 and 243234263207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243234263243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902605 + ... + 1140685.

It is an arithmetic number, because the mean of its divisors is an integer number (36485471295).

Almost surely, 2^243234263245 is an apocalyptic number.

It is an amenable number.

243234263245 is a deficient number, since it is larger than the sum of its proper divisors (48649507115).

243234263245 is a wasteful number, since it uses less digits than its factorization.

243234263245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442415.

The product of its digits is 829440, while the sum is 40.

Adding to 243234263245 its reverse (542362432342), we get a palindrome (785596695587).

The spelling of 243234263245 in words is "two hundred forty-three billion, two hundred thirty-four million, two hundred sixty-three thousand, two hundred forty-five".