323129 has 4 divisors (see below), whose sum is σ = 324480. Its totient is φ = 321780.

The previous prime is 323123. The next prime is 323131. The reversal of 323129 is 921323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 323129.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 323129.

It is not an unprimeable number, because it can be changed into a prime (323123) 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 3 ways as a sum of consecutive naturals, for example, 209 + ... + 830.

It is an arithmetic number, because the mean of its divisors is an integer number (81120).

2³²³¹²⁹ is an apocalyptic number.

It is an amenable number.

323129 is a deficient number, since it is larger than the sum of its proper divisors (1351).

323129 is a wasteful number, since it uses less digits than its factorization.

323129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350.

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

The square root of 323129 is about 568.4443684302. Note that the first 3 decimals coincide. The cubic root of 323129 is about 68.6212532640.

It can be divided in two parts, 32 and 3129, that multiplied together give a triangular number (100128 = T₄₄₇).

The spelling of 323129 in words is "three hundred twenty-three thousand, one hundred twenty-nine".