305423 has 2 divisors, whose sum is σ = 305424. Its totient is φ = 305422.

The previous prime is 305419. The next prime is 305441. The reversal of 305423 is 324503.

It is a weak prime.

It is an emirp because it is prime and its reverse (324503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 305423 - 2² = 305419 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152711 + 152712.

It is an arithmetic number, because the mean of its divisors is an integer number (152712).

2³⁰⁵⁴²³ is an apocalyptic number.

305423 is a deficient number, since it is larger than the sum of its proper divisors (1).

305423 is an equidigital number, since it uses as much as digits as its factorization.

305423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 305423 is about 552.6508843746. The cubic root of 305423 is about 67.3442591383.

Adding to 305423 its reverse (324503), we get a palindrome (629926).

The spelling of 305423 in words is "three hundred five thousand, four hundred twenty-three".