343314021 has 16 divisors (see below), whose sum is σ = 493053440. Its totient is φ = 211785840.

The previous prime is 343314017. The next prime is 343314047. The reversal of 343314021 is 120413343.

It is not a de Polignac number, because 343314021 - 2² = 343314017 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 (343314011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67585 + ... + 72486.

It is an arithmetic number, because the mean of its divisors is an integer number (30815840).

Almost surely, 2^343314021 is an apocalyptic number.

It is an amenable number.

343314021 is a deficient number, since it is larger than the sum of its proper divisors (149739419).

343314021 is a wasteful number, since it uses less digits than its factorization.

343314021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140136.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 343314021 is about 18528.7350080895. The cubic root of 343314021 is about 700.2135545705.

Adding to 343314021 its reverse (120413343), we get a palindrome (463727364).

The spelling of 343314021 in words is "three hundred forty-three million, three hundred fourteen thousand, twenty-one".