243234344340 has 144 divisors (see below), whose sum is σ = 823994091648. Its totient is φ = 59873053824.

The previous prime is 243234344333. The next prime is 243234344341. The reversal of 243234344340 is 43443432342.

243234344340 is a `hidden beast` number, since 2 + 43 + 234 + 3 + 44 + 340 = 666.

It is a super-3 number, since 3×243234344340³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 243234344295 and 243234344304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243234344341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1861752 + ... + 1988111.

It is an arithmetic number, because the mean of its divisors is an integer number (5722181192).

Almost surely, 2^243234344340 is an apocalyptic number.

243234344340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243234344340 is an abundant number, since it is smaller than the sum of its proper divisors (580759747308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243234344340 is a wasteful number, since it uses less digits than its factorization.

243234344340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849900 (or 3849886 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 36.

Adding to 243234344340 its reverse (43443432342), we get a palindrome (286677776682).

The spelling of 243234344340 in words is "two hundred forty-three billion, two hundred thirty-four million, three hundred forty-four thousand, three hundred forty".