306473 has 2 divisors, whose sum is σ = 306474. Its totient is φ = 306472.

The previous prime is 306463. The next prime is 306479. The reversal of 306473 is 374603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196249 + 110224 = 443^2 + 332^2 .

It is an emirp because it is prime and its reverse (374603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 306473 - 2⁴ = 306457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₂₆₅₂₈ and since 306473 and 26528 have the same sum of digits, it is a Honaker prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306473.

It is not a weakly prime, because it can be changed into another prime (306479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153236 + 153237.

It is an arithmetic number, because the mean of its divisors is an integer number (153237).

2³⁰⁶⁴⁷³ is an apocalyptic number.

It is an amenable number.

306473 is a deficient number, since it is larger than the sum of its proper divisors (1).

306473 is an equidigital number, since it uses as much as digits as its factorization.

306473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 306473 is about 553.6000361272. The cubic root of 306473 is about 67.4213441369.

The spelling of 306473 in words is "three hundred six thousand, four hundred seventy-three".