308873 has 4 divisors (see below), whose sum is σ = 327060. Its totient is φ = 290688.

The previous prime is 308857. The next prime is 308887. The reversal of 308873 is 378803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378803 = 19 ⋅19937.

It can be written as a sum of positive squares in 2 ways, for example, as 139129 + 169744 = 373^2 + 412^2 .

It is a cyclic number.

It is not a de Polignac number, because 308873 - 2⁴ = 308857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9068 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (81765).

2³⁰⁸⁸⁷³ is an apocalyptic number.

It is an amenable number.

308873 is a deficient number, since it is larger than the sum of its proper divisors (18187).

308873 is a wasteful number, since it uses less digits than its factorization.

308873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18186.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 308873 is about 555.7634388838. The cubic root of 308873 is about 67.5968796338.

The spelling of 308873 in words is "three hundred eight thousand, eight hundred seventy-three".