343333231243621 has 2 divisors, whose sum is σ = 343333231243622. Its totient is φ = 343333231243620.

The previous prime is 343333231243609. The next prime is 343333231243657. The reversal of 343333231243621 is 126342132333343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318357875167396 + 24975356076225 = 17842586^2 + 4997535^2 .

It is a cyclic number.

It is not a de Polignac number, because 343333231243621 - 2¹¹ = 343333231241573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343333231249621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171666615621810 + 171666615621811.

It is an arithmetic number, because the mean of its divisors is an integer number (171666615621811).

Almost surely, 2^{343333231243621} is an apocalyptic number.

It is an amenable number.

343333231243621 is a deficient number, since it is larger than the sum of its proper divisors (1).

343333231243621 is an equidigital number, since it uses as much as digits as its factorization.

343333231243621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 43.

Adding to 343333231243621 its reverse (126342132333343), we get a palindrome (469675363576964).

The spelling of 343333231243621 in words is "three hundred forty-three trillion, three hundred thirty-three billion, two hundred thirty-one million, two hundred forty-three thousand, six hundred twenty-one".