491303 has 8 divisors (see below), whose sum is σ = 526176. Its totient is φ = 457600.

The previous prime is 491299. The next prime is 491327. The reversal of 491303 is 303194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491303 - 2² = 491299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (65772).

2⁴⁹¹³⁰³ is an apocalyptic number.

491303 is a deficient number, since it is larger than the sum of its proper divisors (34873).

491303 is a wasteful number, since it uses less digits than its factorization.

491303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 491303 is about 700.9300963720. The cubic root of 491303 is about 78.9071707797.

Adding to 491303 its reverse (303194), we get a palindrome (794497).

The spelling of 491303 in words is "four hundred ninety-one thousand, three hundred three".