343442424221 has 8 divisors (see below), whose sum is σ = 370476490104. Its totient is φ = 316496275200.

The previous prime is 343442424209. The next prime is 343442424251. The reversal of 343442424221 is 122424244343.

It can be written as a sum of positive squares in 4 ways, for example, as 97337136121 + 246105288100 = 311989^2 + 496090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 343442424221 - 2¹⁴ = 343442407837 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 (343442424251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21971096 + ... + 21986721.

It is an arithmetic number, because the mean of its divisors is an integer number (46309561263).

Almost surely, 2^343442424221 is an apocalyptic number.

It is an amenable number.

343442424221 is a deficient number, since it is larger than the sum of its proper divisors (27034065883).

343442424221 is a wasteful number, since it uses less digits than its factorization.

343442424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43958431.

The product of its digits is 147456, while the sum is 35.

Adding to 343442424221 its reverse (122424244343), we get a palindrome (465866668564).

The spelling of 343442424221 in words is "three hundred forty-three billion, four hundred forty-two million, four hundred twenty-four thousand, two hundred twenty-one".