321255321 has 4 divisors (see below), whose sum is σ = 428340432. Its totient is φ = 214170212.

The previous prime is 321255281. The next prime is 321255323. The reversal of 321255321 is 123552123.

It is a happy number.

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 not a de Polignac number, because 321255321 - 2¹⁵ = 321222553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321255291 and 321255300.

It is not an unprimeable number, because it can be changed into a prime (321255323) 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, 53542551 + ... + 53542556.

It is an arithmetic number, because the mean of its divisors is an integer number (107085108).

Almost surely, 2^321255321 is an apocalyptic number.

It is an amenable number.

321255321 is a deficient number, since it is larger than the sum of its proper divisors (107085111).

321255321 is a wasteful number, since it uses less digits than its factorization.

321255321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107085110.

The product of its digits is 1800, while the sum is 24.

The square root of 321255321 is about 17923.5967651585. The cubic root of 321255321 is about 684.8836152988.

The spelling of 321255321 in words is "three hundred twenty-one million, two hundred fifty-five thousand, three hundred twenty-one".