343012021 has 8 divisors (see below), whose sum is σ = 375417504. Its totient is φ = 310810320.

The previous prime is 343012013. The next prime is 343012049. The reversal of 343012021 is 120210343.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 343012021 - 2³ = 343012013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 343011986 and 343012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343012081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47410 + ... + 54163.

It is an arithmetic number, because the mean of its divisors is an integer number (46927188).

Almost surely, 2^343012021 is an apocalyptic number.

It is an amenable number.

343012021 is a deficient number, since it is larger than the sum of its proper divisors (32405483).

343012021 is a wasteful number, since it uses less digits than its factorization.

343012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101891.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 343012021 is about 18520.5837111037. The cubic root of 343012021 is about 700.0081774555.

Adding to 343012021 its reverse (120210343), we get a palindrome (463222364).

It can be divided in two parts, 3430 and 12021, that added together give a palindrome (15451).

The spelling of 343012021 in words is "three hundred forty-three million, twelve thousand, twenty-one".