343001021 has 16 divisors (see below), whose sum is σ = 381833088. Its totient is φ = 305510400.

The previous prime is 343001017. The next prime is 343001041. The reversal of 343001021 is 120100343.

It is a cyclic number.

It is not a de Polignac number, because 343001021 - 2² = 343001017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 343000987 and 343001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343001011) 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 15 ways as a sum of consecutive naturals, for example, 108341 + ... + 111461.

It is an arithmetic number, because the mean of its divisors is an integer number (23864568).

Almost surely, 2^343001021 is an apocalyptic number.

It is an amenable number.

343001021 is a deficient number, since it is larger than the sum of its proper divisors (38832067).

343001021 is a wasteful number, since it uses less digits than its factorization.

343001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 343001021 is about 18520.2867418407. The cubic root of 343001021 is about 700.0006945571. Note that the first 3 decimals are identical.

Adding to 343001021 its reverse (120100343), we get a palindrome (463101364).

The spelling of 343001021 in words is "three hundred forty-three million, one thousand, twenty-one".