343403303321 has 24 divisors (see below), whose sum is σ = 395490816000. Its totient is φ = 297002923776.

The previous prime is 343403303263. The next prime is 343403303339. The reversal of 343403303321 is 123303304343.

It is a happy number.

It is not a de Polignac number, because 343403303321 - 2³⁸ = 68525396377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343403303521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372680 + ... + 908678.

It is an arithmetic number, because the mean of its divisors is an integer number (16478784000).

Almost surely, 2^343403303321 is an apocalyptic number.

It is an amenable number.

343403303321 is a deficient number, since it is larger than the sum of its proper divisors (52087512679).

343403303321 is a wasteful number, since it uses less digits than its factorization.

343403303321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536265 (or 536252 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 29.

Adding to 343403303321 its reverse (123303304343), we get a palindrome (466706607664).

The spelling of 343403303321 in words is "three hundred forty-three billion, four hundred three million, three hundred three thousand, three hundred twenty-one".