34020321 has 4 divisors (see below), whose sum is σ = 45360432. Its totient is φ = 22680212.

The previous prime is 34020319. The next prime is 34020331. The reversal of 34020321 is 12302043.

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 34020321 - 2¹ = 34020319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34020321.

It is not an unprimeable number, because it can be changed into a prime (34020331) 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, 5670051 + ... + 5670056.

It is an arithmetic number, because the mean of its divisors is an integer number (11340108).

Almost surely, 2^34020321 is an apocalyptic number.

It is an amenable number.

34020321 is a deficient number, since it is larger than the sum of its proper divisors (11340111).

34020321 is a wasteful number, since it uses less digits than its factorization.

34020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340110.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 34020321 is about 5832.6941459329. The cubic root of 34020321 is about 324.0257085987.

Adding to 34020321 its reverse (12302043), we get a palindrome (46322364).

The spelling of 34020321 in words is "thirty-four million, twenty thousand, three hundred twenty-one".