321534345 has 64 divisors (see below), whose sum is σ = 602173440. Its totient is φ = 144768000.

The previous prime is 321534337. The next prime is 321534371. The reversal of 321534345 is 543435123.

It is not a de Polignac number, because 321534345 - 2³ = 321534337 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 220870 + ... + 222320.

It is an arithmetic number, because the mean of its divisors is an integer number (9408960).

Almost surely, 2^321534345 is an apocalyptic number.

It is an amenable number.

321534345 is a deficient number, since it is larger than the sum of its proper divisors (280639095).

321534345 is a wasteful number, since it uses less digits than its factorization.

321534345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566.

The product of its digits is 21600, while the sum is 30.

The square root of 321534345 is about 17931.3787813431. The cubic root of 321534345 is about 685.0818415011.

Adding to 321534345 its reverse (543435123), we get a palindrome (864969468).

The spelling of 321534345 in words is "three hundred twenty-one million, five hundred thirty-four thousand, three hundred forty-five".