343044421 has 4 divisors (see below), whose sum is σ = 345149152. Its totient is φ = 340939692.

The previous prime is 343044409. The next prime is 343044431. The reversal of 343044421 is 124440343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124440343 = 53 ⋅2347931.

It is a cyclic number.

It is not a de Polignac number, because 343044421 - 2¹³ = 343036229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343044431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052121 + ... + 1052446.

It is an arithmetic number, because the mean of its divisors is an integer number (86287288).

Almost surely, 2^343044421 is an apocalyptic number.

It is an amenable number.

343044421 is a deficient number, since it is larger than the sum of its proper divisors (2104731).

343044421 is a wasteful number, since it uses less digits than its factorization.

343044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104730.

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

The square root of 343044421 is about 18521.4583929020. The cubic root of 343044421 is about 700.0302170629.

Adding to 343044421 its reverse (124440343), we get a palindrome (467484764).

The spelling of 343044421 in words is "three hundred forty-three million, forty-four thousand, four hundred twenty-one".