321333425 has 18 divisors (see below), whose sum is σ = 463508838. Its totient is φ = 220342080.

The previous prime is 321333409. The next prime is 321333443. The reversal of 321333425 is 524333123.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 107910544 + 213422881 = 10388^2 + 14609^2 .

It is not a de Polignac number, because 321333425 - 2⁴ = 321333409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321333394 and 321333403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 129932 + ... + 132381.

It is an arithmetic number, because the mean of its divisors is an integer number (25750491).

Almost surely, 2^321333425 is an apocalyptic number.

321333425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

321333425 is a deficient number, since it is larger than the sum of its proper divisors (142175413).

321333425 is a wasteful number, since it uses less digits than its factorization.

321333425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262337 (or 262325 counting only the distinct ones).

The product of its digits is 6480, while the sum is 26.

The square root of 321333425 is about 17925.7754365048. The cubic root of 321333425 is about 684.9391140584.

Adding to 321333425 its reverse (524333123), we get a palindrome (845666548).

The spelling of 321333425 in words is "three hundred twenty-one million, three hundred thirty-three thousand, four hundred twenty-five".