342503209 has 2 divisors, whose sum is σ = 342503210. Its totient is φ = 342503208.

The previous prime is 342503173. The next prime is 342503237. The reversal of 342503209 is 902305243.

It is an a-pointer prime, because the next prime (342503237) can be obtained adding 342503209 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202435984 + 140067225 = 14228^2 + 11835^2 .

It is a cyclic number.

It is not a de Polignac number, because 342503209 - 2¹¹ = 342501161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (342503269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171251604 + 171251605.

It is an arithmetic number, because the mean of its divisors is an integer number (171251605).

Almost surely, 2^342503209 is an apocalyptic number.

It is an amenable number.

342503209 is a deficient number, since it is larger than the sum of its proper divisors (1).

342503209 is an equidigital number, since it uses as much as digits as its factorization.

342503209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 342503209 is about 18506.8422211894. The cubic root of 342503209 is about 699.6618836470.

The spelling of 342503209 in words is "three hundred forty-two million, five hundred three thousand, two hundred nine".