304240225181 has 2 divisors, whose sum is σ = 304240225182. Its totient is φ = 304240225180.

The previous prime is 304240225147. The next prime is 304240225183. The reversal of 304240225181 is 181522042403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287633779225 + 16606445956 = 536315^2 + 128866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304240225181 is a prime.

It is a super-2 number, since 2×304240225181² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 304240225183, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304240225183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152120112590 + 152120112591.

It is an arithmetic number, because the mean of its divisors is an integer number (152120112591).

Almost surely, 2^304240225181 is an apocalyptic number.

It is an amenable number.

304240225181 is a deficient number, since it is larger than the sum of its proper divisors (1).

304240225181 is an equidigital number, since it uses as much as digits as its factorization.

304240225181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 304240225181 its reverse (181522042403), we get a palindrome (485762267584).

The spelling of 304240225181 in words is "three hundred four billion, two hundred forty million, two hundred twenty-five thousand, one hundred eighty-one".