321200011331 has 4 divisors (see below), whose sum is σ = 324511351752. Its totient is φ = 317888670912.

The previous prime is 321200011313. The next prime is 321200011361. The reversal of 321200011331 is 133110002123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133110002123 = 7 ⋅19015714589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321200011331 is a prime.

It is a super-3 number, since 3×321200011331³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321200011361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655670065 + ... + 1655670258.

It is an arithmetic number, because the mean of its divisors is an integer number (81127837938).

Almost surely, 2^321200011331 is an apocalyptic number.

321200011331 is a deficient number, since it is larger than the sum of its proper divisors (3311340421).

321200011331 is an equidigital number, since it uses as much as digits as its factorization.

321200011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311340420.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 321200011331 its reverse (133110002123), we get a palindrome (454310013454).

The spelling of 321200011331 in words is "three hundred twenty-one billion, two hundred million, eleven thousand, three hundred thirty-one".