308091241 has 2 divisors, whose sum is σ = 308091242. Its totient is φ = 308091240.

The previous prime is 308091239. The next prime is 308091247. The reversal of 308091241 is 142190803.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269091216 + 39000025 = 16404^2 + 6245^2 .

It is a cyclic number.

It is not a de Polignac number, because 308091241 - 2¹ = 308091239 is a prime.

Together with 308091239, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (308091247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154045620 + 154045621.

It is an arithmetic number, because the mean of its divisors is an integer number (154045621).

Almost surely, 2^308091241 is an apocalyptic number.

It is an amenable number.

308091241 is a deficient number, since it is larger than the sum of its proper divisors (1).

308091241 is an equidigital number, since it uses as much as digits as its factorization.

308091241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 308091241 is about 17552.5280515372. The cubic root of 308091241 is about 675.3980211320.

The spelling of 308091241 in words is "three hundred eight million, ninety-one thousand, two hundred forty-one".