243214444240 has 40 divisors (see below), whose sum is σ = 565775839368. Its totient is φ = 97233776640.

The previous prime is 243214444171. The next prime is 243214444259. The reversal of 243214444240 is 42444412342.

It can be written as a sum of positive squares in 4 ways, for example, as 8315251344 + 234899192896 = 91188^2 + 484664^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 243214444196 and 243214444205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661741 + ... + 961420.

Almost surely, 2^243214444240 is an apocalyptic number.

243214444240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243214444240 is an abundant number, since it is smaller than the sum of its proper divisors (322561395128).

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

243214444240 is a wasteful number, since it uses less digits than its factorization.

243214444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625047 (or 1625041 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 243214444240 its reverse (42444412342), we get a palindrome (285658856582).

The spelling of 243214444240 in words is "two hundred forty-three billion, two hundred fourteen million, four hundred forty-four thousand, two hundred forty".