343542321 has 24 divisors (see below), whose sum is σ = 510368040. Its totient is φ = 222547200.

The previous prime is 343542313. The next prime is 343542347. The reversal of 343542321 is 123245343.

It can be written as a sum of positive squares in 4 ways, for example, as 32901696 + 310640625 = 5736^2 + 17625^2 .

It is not a de Polignac number, because 343542321 - 2³ = 343542313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (343542361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97531 + ... + 100991.

It is an arithmetic number, because the mean of its divisors is an integer number (21265335).

Almost surely, 2^343542321 is an apocalyptic number.

It is an amenable number.

343542321 is a deficient number, since it is larger than the sum of its proper divisors (166825719).

343542321 is a wasteful number, since it uses less digits than its factorization.

343542321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777 (or 3774 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 343542321 is about 18534.8946854305. The cubic root of 343542321 is about 700.3687315834.

Adding to 343542321 its reverse (123245343), we get a palindrome (466787664).

The spelling of 343542321 in words is "three hundred forty-three million, five hundred forty-two thousand, three hundred twenty-one".