321125329 has 4 divisors (see below), whose sum is σ = 367000384. Its totient is φ = 275250276.

The previous prime is 321125317. The next prime is 321125339. The reversal of 321125329 is 923521123.

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, and also an emirpimes, since its reverse is a distinct semiprime: 923521123 = 7 ⋅131931589.

It is not a de Polignac number, because 321125329 - 2¹¹ = 321123281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321125297 and 321125306.

It is not an unprimeable number, because it can be changed into a prime (321125309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22937517 + ... + 22937530.

It is an arithmetic number, because the mean of its divisors is an integer number (91750096).

Almost surely, 2^321125329 is an apocalyptic number.

It is an amenable number.

321125329 is a deficient number, since it is larger than the sum of its proper divisors (45875055).

321125329 is an equidigital number, since it uses as much as digits as its factorization.

321125329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45875054.

The product of its digits is 3240, while the sum is 28.

The square root of 321125329 is about 17919.9701171626. The cubic root of 321125329 is about 684.7912262695.

The spelling of 321125329 in words is "three hundred twenty-one million, one hundred twenty-five thousand, three hundred twenty-nine".