3230021 has 4 divisors (see below), whose sum is σ = 3308844. Its totient is φ = 3151200.

The previous prime is 3229987. The next prime is 3230023. The reversal of 3230021 is 1200323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 302500 + 2927521 = 550^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 3230021 - 2⁶ = 3229957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3229984 and 3230011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3230023) 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, 39350 + ... + 39431.

It is an arithmetic number, because the mean of its divisors is an integer number (827211).

Almost surely, 2^3230021 is an apocalyptic number.

It is an amenable number.

3230021 is a deficient number, since it is larger than the sum of its proper divisors (78823).

3230021 is an equidigital number, since it uses as much as digits as its factorization.

3230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78822.

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

The square root of 3230021 is about 1797.2259179079. The cubic root of 3230021 is about 147.8206526098.

Adding to 3230021 its reverse (1200323), we get a palindrome (4430344).

The spelling of 3230021 in words is "three million, two hundred thirty thousand, twenty-one".