344005132321 has 4 divisors (see below), whose sum is σ = 352395501444. Its totient is φ = 335614763200.

The previous prime is 344005132249. The next prime is 344005132363. The reversal of 344005132321 is 123231500443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123231500443 = 23027 ⋅5351609.

It can be written as a sum of positive squares in 2 ways, for example, as 4564894096 + 339440238225 = 67564^2 + 582615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344005132321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 344005132321.

It is not an unprimeable number, because it can be changed into a prime (344005172321) 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, 4195184500 + ... + 4195184581.

It is an arithmetic number, because the mean of its divisors is an integer number (88098875361).

Almost surely, 2^344005132321 is an apocalyptic number.

It is an amenable number.

344005132321 is a deficient number, since it is larger than the sum of its proper divisors (8390369123).

344005132321 is an equidigital number, since it uses as much as digits as its factorization.

344005132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390369122.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 344005132321 its reverse (123231500443), we get a palindrome (467236632764).

The spelling of 344005132321 in words is "three hundred forty-four billion, five million, one hundred thirty-two thousand, three hundred twenty-one".