343104321 has 48 divisors (see below), whose sum is σ = 548589888. Its totient is φ = 190108800.

The previous prime is 343104269. The next prime is 343104323. The reversal of 343104321 is 123401343.

It is not a de Polignac number, because 343104321 - 2⁶ = 343104257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343104323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 744031 + ... + 744491.

It is an arithmetic number, because the mean of its divisors is an integer number (11428956).

Almost surely, 2^343104321 is an apocalyptic number.

It is an amenable number.

343104321 is a deficient number, since it is larger than the sum of its proper divisors (205485567).

343104321 is a wasteful number, since it uses less digits than its factorization.

343104321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 615 counting only the distinct ones).

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

The square root of 343104321 is about 18523.0753656082. The cubic root of 343104321 is about 700.0709594732.

Adding to 343104321 its reverse (123401343), we get a palindrome (466505664).

The spelling of 343104321 in words is "three hundred forty-three million, one hundred four thousand, three hundred twenty-one".