163343237 has 2 divisors, whose sum is σ = 163343238. Its totient is φ = 163343236.

The previous prime is 163343233. The next prime is 163343287. The reversal of 163343237 is 732343361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150945796 + 12397441 = 12286^2 + 3521^2 .

It is an emirp because it is prime and its reverse (732343361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163343237 - 2² = 163343233 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163343233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81671618 + 81671619.

It is an arithmetic number, because the mean of its divisors is an integer number (81671619).

Almost surely, 2^163343237 is an apocalyptic number.

It is an amenable number.

163343237 is a deficient number, since it is larger than the sum of its proper divisors (1).

163343237 is an equidigital number, since it uses as much as digits as its factorization.

163343237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 32.

The square root of 163343237 is about 12780.5804641260. The cubic root of 163343237 is about 546.6387139105.

Adding to 163343237 its reverse (732343361), we get a palindrome (895686598).

The spelling of 163343237 in words is "one hundred sixty-three million, three hundred forty-three thousand, two hundred thirty-seven".