344204321 has 4 divisors (see below), whose sum is σ = 364451652. Its totient is φ = 323956992.

The previous prime is 344204309. The next prime is 344204327. The reversal of 344204321 is 123402443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123402443 = 3701 ⋅33343.

It can be written as a sum of positive squares in 2 ways, for example, as 259564321 + 84640000 = 16111^2 + 9200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344204321 is a prime.

It is a super-2 number, since 2×344204321² = 236953229190142082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344204327) 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, 10123640 + ... + 10123673.

It is an arithmetic number, because the mean of its divisors is an integer number (91112913).

Almost surely, 2^344204321 is an apocalyptic number.

It is an amenable number.

344204321 is a deficient number, since it is larger than the sum of its proper divisors (20247331).

344204321 is a wasteful number, since it uses less digits than its factorization.

344204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20247330.

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

The square root of 344204321 is about 18552.7442983511. The cubic root of 344204321 is about 700.8183089999.

Adding to 344204321 its reverse (123402443), we get a palindrome (467606764).

The spelling of 344204321 in words is "three hundred forty-four million, two hundred four thousand, three hundred twenty-one".