321332313 has 16 divisors (see below), whose sum is σ = 451425600. Its totient is φ = 202752000.

The previous prime is 321332303. The next prime is 321332381. The reversal of 321332313 is 313233123.

It is not a de Polignac number, because 321332313 - 2⁵ = 321332281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321332313.

It is not an unprimeable number, because it can be changed into a prime (321332303) 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 15 ways as a sum of consecutive naturals, for example, 78313 + ... + 82313.

It is an arithmetic number, because the mean of its divisors is an integer number (28214100).

Almost surely, 2^321332313 is an apocalyptic number.

It is an amenable number.

321332313 is a deficient number, since it is larger than the sum of its proper divisors (130093287).

321332313 is a wasteful number, since it uses less digits than its factorization.

321332313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432.

The product of its digits is 972, while the sum is 21.

The square root of 321332313 is about 17925.7444196887. The cubic root of 321332313 is about 684.9383239620.

Adding to 321332313 its reverse (313233123), we get a palindrome (634565436).

The spelling of 321332313 in words is "three hundred twenty-one million, three hundred thirty-two thousand, three hundred thirteen".