334216321 has 4 divisors (see below), whose sum is σ = 335896000. Its totient is φ = 332536644.

The previous prime is 334216307. The next prime is 334216331. The reversal of 334216321 is 123612433.

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 a cyclic number.

It is not a de Polignac number, because 334216321 - 2¹³ = 334208129 is a prime.

It is a super-2 number, since 2×334216321² = 223401098445550082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (334216331) 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, 839541 + ... + 839938.

It is an arithmetic number, because the mean of its divisors is an integer number (83974000).

Almost surely, 2^334216321 is an apocalyptic number.

It is an amenable number.

334216321 is a deficient number, since it is larger than the sum of its proper divisors (1679679).

334216321 is a wasteful number, since it uses less digits than its factorization.

334216321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679678.

The product of its digits is 2592, while the sum is 25.

The square root of 334216321 is about 18281.5842037828. The cubic root of 334216321 is about 693.9729640075.

Adding to 334216321 its reverse (123612433), we get a palindrome (457828754).

The spelling of 334216321 in words is "three hundred thirty-four million, two hundred sixteen thousand, three hundred twenty-one".