306430673 has 4 divisors (see below), whose sum is σ = 306809328. Its totient is φ = 306052020.

The previous prime is 306430669. The next prime is 306430681. The reversal of 306430673 is 376034603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 306430673 - 2² = 306430669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306430603) 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, 188111 + ... + 189732.

It is an arithmetic number, because the mean of its divisors is an integer number (76702332).

Almost surely, 2^306430673 is an apocalyptic number.

It is an amenable number.

306430673 is a deficient number, since it is larger than the sum of its proper divisors (378655).

306430673 is an equidigital number, since it uses as much as digits as its factorization.

306430673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378654.

The product of its (nonzero) digits is 27216, while the sum is 32.

The square root of 306430673 is about 17505.1613245922. The cubic root of 306430673 is about 674.1824013899.

The spelling of 306430673 in words is "three hundred six million, four hundred thirty thousand, six hundred seventy-three".