343210121 has 12 divisors (see below), whose sum is σ = 352633680. Its totient is φ = 334029000.

The previous prime is 343210061. The next prime is 343210169. The reversal of 343210121 is 121012343.

343210121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a de Polignac number, because none of the positive numbers 2^k-343210121 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 343210121.

It is not an unprimeable number, because it can be changed into a prime (343210181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554150 + ... + 554768.

It is an arithmetic number, because the mean of its divisors is an integer number (29386140).

Almost surely, 2^343210121 is an apocalyptic number.

It is an amenable number.

343210121 is a deficient number, since it is larger than the sum of its proper divisors (9423559).

343210121 is an equidigital number, since it uses as much as digits as its factorization.

343210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 343210121 is about 18525.9310427303. The cubic root of 343210121 is about 700.1429102776.

Adding to 343210121 its reverse (121012343), we get a palindrome (464222464).

The spelling of 343210121 in words is "three hundred forty-three million, two hundred ten thousand, one hundred twenty-one".