321425345 has 8 divisors (see below), whose sum is σ = 402480576. Its totient is φ = 245960176.

The previous prime is 321425323. The next prime is 321425347. The reversal of 321425345 is 543524123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321425345 - 2⁸ = 321425089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321425347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1397387 + ... + 1397616.

It is an arithmetic number, because the mean of its divisors is an integer number (50310072).

Almost surely, 2^321425345 is an apocalyptic number.

It is an amenable number.

321425345 is a deficient number, since it is larger than the sum of its proper divisors (81055231).

321425345 is a wasteful number, since it uses less digits than its factorization.

321425345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795031.

The product of its digits is 14400, while the sum is 29.

The square root of 321425345 is about 17928.3391589963. The cubic root of 321425345 is about 685.0044186051.

Adding to 321425345 its reverse (543524123), we get a palindrome (864949468).

The spelling of 321425345 in words is "three hundred twenty-one million, four hundred twenty-five thousand, three hundred forty-five".