326291 has 6 divisors (see below), whose sum is σ = 379620. Its totient is φ = 279636.

The previous prime is 326257. The next prime is 326309. The reversal of 326291 is 192623.

It is a de Polignac number, because none of the positive numbers 2^k-326291 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (326251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3281 + ... + 3378.

It is an arithmetic number, because the mean of its divisors is an integer number (63270).

2³²⁶²⁹¹ is an apocalyptic number.

326291 is a deficient number, since it is larger than the sum of its proper divisors (53329).

326291 is an equidigital number, since it uses as much as digits as its factorization.

326291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673 (or 6666 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 326291 is about 571.2188722373. The cubic root of 326291 is about 68.8443596878.

The spelling of 326291 in words is "three hundred twenty-six thousand, two hundred ninety-one".