344143421 has 8 divisors (see below), whose sum is σ = 348657144. Its totient is φ = 339655680.

The previous prime is 344143417. The next prime is 344143433. The reversal of 344143421 is 124341443.

It can be written as a sum of positive squares in 4 ways, for example, as 448900 + 343694521 = 670^2 + 18539^2 .

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 344143421 - 2² = 344143417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344148421) 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, 20915 + ... + 33551.

It is an arithmetic number, because the mean of its divisors is an integer number (43582143).

Almost surely, 2^344143421 is an apocalyptic number.

It is an amenable number.

344143421 is a deficient number, since it is larger than the sum of its proper divisors (4513723).

344143421 is a wasteful number, since it uses less digits than its factorization.

344143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991.

The product of its digits is 4608, while the sum is 26.

The square root of 344143421 is about 18551.1029591235. The cubic root of 344143421 is about 700.7769746821.

Adding to 344143421 its reverse (124341443), we get a palindrome (468484864).

The spelling of 344143421 in words is "three hundred forty-four million, one hundred forty-three thousand, four hundred twenty-one".