3430321 has 4 divisors (see below), whose sum is σ = 3440500. Its totient is φ = 3420144.

The previous prime is 3430303. The next prime is 3430331. The reversal of 3430321 is 1230343.

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 2852721 + 577600 = 1689^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 3430321 - 2²¹ = 1333169 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3430295 and 3430304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3430331) 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, 4566 + ... + 5263.

It is an arithmetic number, because the mean of its divisors is an integer number (860125).

Almost surely, 2^3430321 is an apocalyptic number.

It is an amenable number.

3430321 is a deficient number, since it is larger than the sum of its proper divisors (10179).

3430321 is an equidigital number, since it uses as much as digits as its factorization.

3430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10178.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 3430321 is about 1852.1125775719. The cubic root of 3430321 is about 150.8151327374.

Adding to 3430321 its reverse (1230343), we get a palindrome (4660664).

The spelling of 3430321 in words is "three million, four hundred thirty thousand, three hundred twenty-one".