344404321 has 8 divisors (see below), whose sum is σ = 351086720. Its totient is φ = 337767408.

The previous prime is 344404301. The next prime is 344404339. The reversal of 344404321 is 123404443.

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 344404321 - 2¹⁵ = 344371553 is a prime.

It is a super-2 number, since 2×344404321² = 237228672646942082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344404301) 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, 4120 + ... + 26566.

It is an arithmetic number, because the mean of its divisors is an integer number (43885840).

Almost surely, 2^344404321 is an apocalyptic number.

It is an amenable number.

344404321 is a deficient number, since it is larger than the sum of its proper divisors (6682399).

344404321 is a wasteful number, since it uses less digits than its factorization.

344404321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22743.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 344404321 is about 18558.1335537817. The cubic root of 344404321 is about 700.9540195983.

Adding to 344404321 its reverse (123404443), we get a palindrome (467808764).

The spelling of 344404321 in words is "three hundred forty-four million, four hundred four thousand, three hundred twenty-one".