302242181 has 2 divisors, whose sum is σ = 302242182. Its totient is φ = 302242180.

The previous prime is 302242169. The next prime is 302242183. The reversal of 302242181 is 181242203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301577956 + 664225 = 17366^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 302242181 - 2²⁶ = 235133317 is a prime.

It is a super-2 number, since 2×302242181² = 182700671951273522, which contains 22 as substring.

Together with 302242183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302242183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151121090 + 151121091.

It is an arithmetic number, because the mean of its divisors is an integer number (151121091).

Almost surely, 2^302242181 is an apocalyptic number.

It is an amenable number.

302242181 is a deficient number, since it is larger than the sum of its proper divisors (1).

302242181 is an equidigital number, since it uses as much as digits as its factorization.

302242181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 302242181 is about 17385.1137758716. The cubic root of 302242181 is about 671.0965788122.

Adding to 302242181 its reverse (181242203), we get a palindrome (483484384).

The spelling of 302242181 in words is "three hundred two million, two hundred forty-two thousand, one hundred eighty-one".