308545147 has 2 divisors, whose sum is σ = 308545148. Its totient is φ = 308545146.

The previous prime is 308545129. The next prime is 308545151. The reversal of 308545147 is 741545803.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308545147 is a prime.

It is not a weakly prime, because it can be changed into another prime (308545157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154272573 + 154272574.

It is an arithmetic number, because the mean of its divisors is an integer number (154272574).

Almost surely, 2^308545147 is an apocalyptic number.

308545147 is a deficient number, since it is larger than the sum of its proper divisors (1).

308545147 is an equidigital number, since it uses as much as digits as its factorization.

308545147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 308545147 is about 17565.4532250096. The cubic root of 308545147 is about 675.7295428188.

The spelling of 308545147 in words is "three hundred eight million, five hundred forty-five thousand, one hundred forty-seven".