2030321 has 4 divisors (see below), whose sum is σ = 2137200. Its totient is φ = 1923444.

The previous prime is 2030317. The next prime is 2030363. The reversal of 2030321 is 1230302.

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: 1230302 = 2 ⋅615151.

It is a cyclic number.

It is not a de Polignac number, because 2030321 - 2² = 2030317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2030311) 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, 53411 + ... + 53448.

It is an arithmetic number, because the mean of its divisors is an integer number (534300).

2^2030321 is an apocalyptic number.

It is an amenable number.

2030321 is a deficient number, since it is larger than the sum of its proper divisors (106879).

2030321 is a wasteful number, since it uses less digits than its factorization.

2030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106878.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 2030321 is about 1424.8933293408. The cubic root of 2030321 is about 126.6256153521.

Adding to 2030321 its reverse (1230302), we get a palindrome (3260623).

The spelling of 2030321 in words is "two million, thirty thousand, three hundred twenty-one".