344121340 has 12 divisors (see below), whose sum is σ = 722654856. Its totient is φ = 137648528.

The previous prime is 344121319. The next prime is 344121341. The reversal of 344121340 is 43121443.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344121341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8603014 + ... + 8603053.

It is an arithmetic number, because the mean of its divisors is an integer number (60221238).

Almost surely, 2^344121340 is an apocalyptic number.

It is an amenable number.

344121340 is an abundant number, since it is smaller than the sum of its proper divisors (378533516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

344121340 is a wasteful number, since it uses less digits than its factorization.

344121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17206076 (or 17206074 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 344121340 is about 18550.5078097609. The cubic root of 344121340 is about 700.7619865634.

Adding to 344121340 its reverse (43121443), we get a palindrome (387242783).

The spelling of 344121340 in words is "three hundred forty-four million, one hundred twenty-one thousand, three hundred forty".