2830321 has 4 divisors (see below), whose sum is σ = 3048052. Its totient is φ = 2612592.

The previous prime is 2830301. The next prime is 2830349. The reversal of 2830321 is 1230382.

It is a happy number.

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 318096 + 2512225 = 564^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 2830321 - 2⁹ = 2829809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2830301) 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, 108846 + ... + 108871.

It is an arithmetic number, because the mean of its divisors is an integer number (762013).

2^2830321 is an apocalyptic number.

It is an amenable number.

2830321 is a deficient number, since it is larger than the sum of its proper divisors (217731).

2830321 is a wasteful number, since it uses less digits than its factorization.

2830321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217730.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2830321 is about 1682.3557887676. The cubic root of 2830321 is about 141.4529137824.

The spelling of 2830321 in words is "two million, eight hundred thirty thousand, three hundred twenty-one".