3243231440 has 40 divisors (see below), whose sum is σ = 7984076040. Its totient is φ = 1220980736.

The previous prime is 3243231437. The next prime is 3243231473. The reversal of 3243231440 is 441323423.

It can be written as a sum of positive squares in 4 ways, for example, as 36048016 + 3207183424 = 6004^2 + 56632^2 .

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

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, 1191005 + ... + 1193724.

It is an arithmetic number, because the mean of its divisors is an integer number (199601901).

Almost surely, 2^3243231440 is an apocalyptic number.

It is an amenable number.

3243231440 is an abundant number, since it is smaller than the sum of its proper divisors (4740844600).

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

3243231440 is a wasteful number, since it uses less digits than its factorization.

3243231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384759 (or 2384753 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 3243231440 is about 56949.3761159857. The cubic root of 3243231440 is about 1480.2190204229.

Adding to 3243231440 its reverse (441323423), we get a palindrome (3684554863).

The spelling of 3243231440 in words is "three billion, two hundred forty-three million, two hundred thirty-one thousand, four hundred forty".