342503321 has 2 divisors, whose sum is σ = 342503322. Its totient is φ = 342503320.

The previous prime is 342503309. The next prime is 342503333. The reversal of 342503321 is 123305243.

It is a balanced prime because it is at equal distance from previous prime (342503309) and next prime (342503333).

It can be written as a sum of positive squares in only one way, i.e., 313998400 + 28504921 = 17720^2 + 5339^2 .

It is an emirp because it is prime and its reverse (123305243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342503321 - 2¹⁰ = 342502297 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (342503341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171251660 + 171251661.

It is an arithmetic number, because the mean of its divisors is an integer number (171251661).

Almost surely, 2^342503321 is an apocalyptic number.

It is an amenable number.

342503321 is a deficient number, since it is larger than the sum of its proper divisors (1).

342503321 is an equidigital number, since it uses as much as digits as its factorization.

342503321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 342503321 is about 18506.8452470971. The cubic root of 342503321 is about 699.6619599111.

Adding to 342503321 its reverse (123305243), we get a palindrome (465808564).

The spelling of 342503321 in words is "three hundred forty-two million, five hundred three thousand, three hundred twenty-one".