344240321 has 4 divisors (see below), whose sum is σ = 344277444. Its totient is φ = 344203200.

The previous prime is 344240297. The next prime is 344240329. The reversal of 344240321 is 123042443.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 32364721 + 311875600 = 5689^2 + 17660^2 .

It is a cyclic number.

It is not a de Polignac number, because 344240321 - 2⁶ = 344240257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344240329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8501 + ... + 27581.

It is an arithmetic number, because the mean of its divisors is an integer number (86069361).

Almost surely, 2^344240321 is an apocalyptic number.

It is an amenable number.

344240321 is a deficient number, since it is larger than the sum of its proper divisors (37123).

344240321 is a wasteful number, since it uses less digits than its factorization.

344240321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37122.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 344240321 is about 18553.7144798555. The cubic root of 344240321 is about 700.8427407865.

Adding to 344240321 its reverse (123042443), we get a palindrome (467282764).

The spelling of 344240321 in words is "three hundred forty-four million, two hundred forty thousand, three hundred twenty-one".