243214431444 has 72 divisors (see below), whose sum is σ = 632127780648. Its totient is φ = 78790440960.

The previous prime is 243214431443. The next prime is 243214431613. The reversal of 243214431444 is 444134412342.

243214431444 is a `hidden beast` number, since 2 + 4 + 3 + 214 + 431 + 4 + 4 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 65248571844 + 177965859600 = 255438^2 + 421860^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 243214431399 and 243214431408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243214431443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1069864 + ... + 1277120.

It is an arithmetic number, because the mean of its divisors is an integer number (8779552509).

Almost surely, 2^243214431444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243214431444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316063890324).

243214431444 is an abundant number, since it is smaller than the sum of its proper divisors (388913349204).

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

243214431444 is a wasteful number, since it uses less digits than its factorization.

243214431444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208185 (or 208180 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

Adding to 243214431444 its reverse (444134412342), we get a palindrome (687348843786).

The spelling of 243214431444 in words is "two hundred forty-three billion, two hundred fourteen million, four hundred thirty-one thousand, four hundred forty-four".