343321121 has 32 divisors (see below), whose sum is σ = 416078208. Its totient is φ = 279152640.

The previous prime is 343321081. The next prime is 343321157. The reversal of 343321121 is 121123343.

It is not a de Polignac number, because 343321121 - 2⁶ = 343321057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 343321093 and 343321102.

It is not an unprimeable number, because it can be changed into a prime (343321721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 734930 + ... + 735396.

It is an arithmetic number, because the mean of its divisors is an integer number (13002444).

Almost surely, 2^343321121 is an apocalyptic number.

It is an amenable number.

343321121 is a deficient number, since it is larger than the sum of its proper divisors (72757087).

343321121 is a wasteful number, since it uses less digits than its factorization.

343321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 432, while the sum is 20.

The square root of 343321121 is about 18528.9266013982. The cubic root of 343321121 is about 700.2183815235.

Adding to 343321121 its reverse (121123343), we get a palindrome (464444464).

It can be divided in two parts, 34332 and 1121, that added together give a palindrome (35453).

The spelling of 343321121 in words is "three hundred forty-three million, three hundred twenty-one thousand, one hundred twenty-one".