340044321 has 4 divisors (see below), whose sum is σ = 453392432. Its totient is φ = 226696212.

The previous prime is 340044307. The next prime is 340044329. The reversal of 340044321 is 123440043.

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.

It is not a de Polignac number, because 340044321 - 2¹¹ = 340042273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340044329) 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, 56674051 + ... + 56674056.

It is an arithmetic number, because the mean of its divisors is an integer number (113348108).

Almost surely, 2^340044321 is an apocalyptic number.

It is an amenable number.

340044321 is a deficient number, since it is larger than the sum of its proper divisors (113348111).

340044321 is a wasteful number, since it uses less digits than its factorization.

340044321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113348110.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 340044321 is about 18440.2906972748. The cubic root of 340044321 is about 697.9835308085.

Adding to 340044321 its reverse (123440043), we get a palindrome (463484364).

The spelling of 340044321 in words is "three hundred forty million, forty-four thousand, three hundred twenty-one".