3240443434421 has 2 divisors, whose sum is σ = 3240443434422. Its totient is φ = 3240443434420.

The previous prime is 3240443434411. The next prime is 3240443434433. The reversal of 3240443434421 is 1244343440423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2038153114321 + 1202290320100 = 1427639^2 + 1096490^2 .

It is a cyclic number.

It is not a de Polignac number, because 3240443434421 - 2²² = 3240439240117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3240443434411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620221717210 + 1620221717211.

It is an arithmetic number, because the mean of its divisors is an integer number (1620221717211).

Almost surely, 2^{3240443434421} is an apocalyptic number.

It is an amenable number.

3240443434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240443434421 is an equidigital number, since it uses as much as digits as its factorization.

3240443434421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 3240443434421 its reverse (1244343440423), we get a palindrome (4484786874844).

The spelling of 3240443434421 in words is "three trillion, two hundred forty billion, four hundred forty-three million, four hundred thirty-four thousand, four hundred twenty-one".