3405431244421 has 4 divisors (see below), whose sum is σ = 3405448434892. Its totient is φ = 3405414053952.

The previous prime is 3405431244419. The next prime is 3405431244461. The reversal of 3405431244421 is 1244421345043.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3150997761025 + 254433483396 = 1775105^2 + 504414^2 .

It is a cyclic number.

It is not a de Polignac number, because 3405431244421 - 2¹ = 3405431244419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405431244461) 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 3 ways as a sum of consecutive naturals, for example, 8294580 + ... + 8695453.

It is an arithmetic number, because the mean of its divisors is an integer number (851362108723).

Almost surely, 2^{3405431244421} is an apocalyptic number.

It is an amenable number.

3405431244421 is a deficient number, since it is larger than the sum of its proper divisors (17190471).

3405431244421 is a wasteful number, since it uses less digits than its factorization.

3405431244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17190470.

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 3405431244421 its reverse (1244421345043), we get a palindrome (4649852589464).

The spelling of 3405431244421 in words is "three trillion, four hundred five billion, four hundred thirty-one million, two hundred forty-four thousand, four hundred twenty-one".