3243440431 has 16 divisors (see below), whose sum is σ = 4045144320. Its totient is φ = 2526497280.

The previous prime is 3243440411. The next prime is 3243440477. The reversal of 3243440431 is 1340443423.

It is a cyclic number.

It is not a de Polignac number, because 3243440431 - 2²¹ = 3241343279 is a prime.

It is a super-2 number, since 2×3243440431² = 21039811658890931522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3243440431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243440411) 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 15 ways as a sum of consecutive naturals, for example, 313615 + ... + 323791.

It is an arithmetic number, because the mean of its divisors is an integer number (252821520).

Almost surely, 2^3243440431 is an apocalyptic number.

3243440431 is a deficient number, since it is larger than the sum of its proper divisors (801703889).

3243440431 is a wasteful number, since it uses less digits than its factorization.

3243440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14334.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 3243440431 is about 56951.2109704438. The cubic root of 3243440431 is about 1480.2508144134.

Adding to 3243440431 its reverse (1340443423), we get a palindrome (4583883854).

The spelling of 3243440431 in words is "three billion, two hundred forty-three million, four hundred forty thousand, four hundred thirty-one".