321420203313 has 16 divisors (see below), whose sum is σ = 468229766400. Its totient is φ = 194504510480.

The previous prime is 321420203309. The next prime is 321420203339. The reversal of 321420203313 is 313302024123.

It is a cyclic number.

It is not a de Polignac number, because 321420203313 - 2² = 321420203309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321420203513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7368243 + ... + 7411736.

It is an arithmetic number, because the mean of its divisors is an integer number (29264360400).

Almost surely, 2^321420203313 is an apocalyptic number.

321420203313 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

321420203313 is a deficient number, since it is larger than the sum of its proper divisors (146809563087).

321420203313 is a wasteful number, since it uses less digits than its factorization.

321420203313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14780652.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 321420203313 its reverse (313302024123), we get a palindrome (634722227436).

The spelling of 321420203313 in words is "three hundred twenty-one billion, four hundred twenty million, two hundred three thousand, three hundred thirteen".