303493 has 2 divisors, whose sum is σ = 303494. Its totient is φ = 303492.

The previous prime is 303491. The next prime is 303497. The reversal of 303493 is 394303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199809 + 103684 = 447^2 + 322^2 .

It is a cyclic number.

It is not a de Polignac number, because 303493 - 2¹ = 303491 is a prime.

Together with 303491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (303491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151746 + 151747.

It is an arithmetic number, because the mean of its divisors is an integer number (151747).

2³⁰³⁴⁹³ is an apocalyptic number.

It is an amenable number.

303493 is a deficient number, since it is larger than the sum of its proper divisors (1).

303493 is an equidigital number, since it uses as much as digits as its factorization.

303493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 303493 is about 550.9019876530. The cubic root of 303493 is about 67.2021074783.

Adding to 303493 its reverse (394303), we get a palindrome (697796).

The spelling of 303493 in words is "three hundred three thousand, four hundred ninety-three".