305873 has 2 divisors, whose sum is σ = 305874. Its totient is φ = 305872.

The previous prime is 305867. The next prime is 305917. The reversal of 305873 is 378503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305809 + 64 = 553^2 + 8^2 .

It is an emirp because it is prime and its reverse (378503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 305873 - 2⁴ = 305857 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 305873.

It is not a weakly prime, because it can be changed into another prime (305803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152936 + 152937.

It is an arithmetic number, because the mean of its divisors is an integer number (152937).

2³⁰⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

305873 is a deficient number, since it is larger than the sum of its proper divisors (1).

305873 is an equidigital number, since it uses as much as digits as its factorization.

305873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 305873 is about 553.0578631572. The cubic root of 305873 is about 67.3773171653.

The spelling of 305873 in words is "three hundred five thousand, eight hundred seventy-three".