321303203213 has 16 divisors (see below), whose sum is σ = 332736768000. Its totient is φ = 310058555520.

The previous prime is 321303203189. The next prime is 321303203329. The reversal of 321303203213 is 312302303123.

It is a cyclic number.

It is not a de Polignac number, because 321303203213 - 2²² = 321299008909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321303203513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1350020 + ... + 1570082.

It is an arithmetic number, because the mean of its divisors is an integer number (20796048000).

Almost surely, 2^321303203213 is an apocalyptic number.

It is an amenable number.

321303203213 is a deficient number, since it is larger than the sum of its proper divisors (11433564787).

321303203213 is a wasteful number, since it uses less digits than its factorization.

321303203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220492.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 321303203213 its reverse (312302303123), we get a palindrome (633605506336).

The spelling of 321303203213 in words is "three hundred twenty-one billion, three hundred three million, two hundred three thousand, two hundred thirteen".