308147 has 4 divisors (see below), whose sum is σ = 352176. Its totient is φ = 264120.

The previous prime is 308141. The next prime is 308149. The reversal of 308147 is 741803.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 308147 - 2⁸ = 307891 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308147.

It is not an unprimeable number, because it can be changed into a prime (308141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22004 + ... + 22017.

It is an arithmetic number, because the mean of its divisors is an integer number (88044).

2³⁰⁸¹⁴⁷ is an apocalyptic number.

308147 is a deficient number, since it is larger than the sum of its proper divisors (44029).

308147 is an equidigital number, since it uses as much as digits as its factorization.

308147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44028.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 308147 is about 555.1098990290. The cubic root of 308147 is about 67.5438763658.

The spelling of 308147 in words is "three hundred eight thousand, one hundred forty-seven".