323506 has 4 divisors (see below), whose sum is σ = 485262. Its totient is φ = 161752.

The previous prime is 323473. The next prime is 323507. The reversal of 323506 is 605323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 312481 + 11025 = 559^2 + 105^2 .

It is a super-2 number, since 2×323506² = 209312264072, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (323507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80875 + ... + 80878.

2³²³⁵⁰⁶ is an apocalyptic number.

323506 is a deficient number, since it is larger than the sum of its proper divisors (161756).

323506 is a wasteful number, since it uses less digits than its factorization.

323506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161755.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 323506 is about 568.7758785321. The cubic root of 323506 is about 68.6479300792.

Adding to 323506 its reverse (605323), we get a palindrome (928829).

The spelling of 323506 in words is "three hundred twenty-three thousand, five hundred six".