321311313 has 8 divisors (see below), whose sum is σ = 476016800. Its totient is φ = 214207524.

The previous prime is 321311303. The next prime is 321311321. The reversal of 321311313 is 313113123.

It is a happy number.

321311313 is a `hidden beast` number, since 321 + 31 + 1 + 313 = 666.

It is not a de Polignac number, because 321311313 - 2¹⁰ = 321310289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321311303) 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, 5950183 + ... + 5950236.

It is an arithmetic number, because the mean of its divisors is an integer number (59502100).

Almost surely, 2^321311313 is an apocalyptic number.

It is an amenable number.

321311313 is a deficient number, since it is larger than the sum of its proper divisors (154705487).

321311313 is a wasteful number, since it uses less digits than its factorization.

321311313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11900428 (or 11900422 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 321311313 is about 17925.1586603857. The cubic root of 321311313 is about 684.9234027339.

Adding to 321311313 its reverse (313113123), we get a palindrome (634424436).

The spelling of 321311313 in words is "three hundred twenty-one million, three hundred eleven thousand, three hundred thirteen".