129323 has 4 divisors (see below), whose sum is σ = 131040. Its totient is φ = 127608.

The previous prime is 129313. The next prime is 129341. The reversal of 129323 is 323921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323921 = 13 ⋅24917.

It is a cyclic number.

It is not a de Polignac number, because 129323 - 2¹⁴ = 112939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129295 and 129304.

It is not an unprimeable number, because it can be changed into a prime (129313) 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, 740 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2¹²⁹³²³ is an apocalyptic number.

129323 is a deficient number, since it is larger than the sum of its proper divisors (1717).

129323 is an equidigital number, since it uses as much as digits as its factorization.

129323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

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

The square root of 129323 is about 359.6150719867. The cubic root of 129323 is about 50.5698800576.

The spelling of 129323 in words is "one hundred twenty-nine thousand, three hundred twenty-three".