391323 has 8 divisors (see below), whose sum is σ = 552528. Its totient is φ = 245504.

The previous prime is 391301. The next prime is 391331. The reversal of 391323 is 323193.

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 391323 - 2⁵ = 391291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 391323.

It is not an unprimeable number, because it can be changed into a prime (391373) 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, 3786 + ... + 3887.

It is an arithmetic number, because the mean of its divisors is an integer number (69066).

2³⁹¹³²³ is an apocalyptic number.

391323 is a deficient number, since it is larger than the sum of its proper divisors (161205).

391323 is a wasteful number, since it uses less digits than its factorization.

391323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7693.

The product of its digits is 486, while the sum is 21.

The square root of 391323 is about 625.5581507742. The cubic root of 391323 is about 73.1439581206.

The spelling of 391323 in words is "three hundred ninety-one thousand, three hundred twenty-three".