321030225 has 18 divisors (see below), whose sum is σ = 575001206. Its totient is φ = 171216000.

The previous prime is 321030211. The next prime is 321030247. The reversal of 321030225 is 522030123.

It can be written as a sum of positive squares in 3 ways, for example, as 3370896 + 317659329 = 1836^2 + 17823^2 .

It is not a de Polignac number, because 321030225 - 2¹⁰ = 321029201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321030198 and 321030207.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 713176 + ... + 713625.

Almost surely, 2^321030225 is an apocalyptic number.

It is an amenable number.

321030225 is a deficient number, since it is larger than the sum of its proper divisors (253970981).

321030225 is a wasteful number, since it uses less digits than its factorization.

321030225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426817 (or 1426809 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 321030225 is about 17917.3163448101. The cubic root of 321030225 is about 684.7236173442.

Adding to 321030225 its reverse (522030123), we get a palindrome (843060348).

The spelling of 321030225 in words is "three hundred twenty-one million, thirty thousand, two hundred twenty-five".