491323 has 12 divisors (see below), whose sum is σ = 589152. Its totient is φ = 408240.

The previous prime is 491299. The next prime is 491327. The reversal of 491323 is 323194.

It is a de Polignac number, because none of the positive numbers 2^k-491323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491294 and 491303.

It is not an unprimeable number, because it can be changed into a prime (491327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1678 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (49096).

2⁴⁹¹³²³ is an apocalyptic number.

491323 is a deficient number, since it is larger than the sum of its proper divisors (97829).

491323 is a wasteful number, since it uses less digits than its factorization.

491323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 315 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 491323 is about 700.9443629847. The cubic root of 491323 is about 78.9082414849.

The spelling of 491323 in words is "four hundred ninety-one thousand, three hundred twenty-three".