321131331013211 has 4 divisors (see below), whose sum is σ = 321133350955032. Its totient is φ = 321129311071392.

The previous prime is 321131331013151. The next prime is 321131331013237. The reversal of 321131331013211 is 112310133131123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321131331013211 - 2¹⁰ = 321131331012187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321131334013211) 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, 1009732421 + ... + 1010050406.

It is an arithmetic number, because the mean of its divisors is an integer number (80283337738758).

Almost surely, 2^{321131331013211} is an apocalyptic number.

321131331013211 is a deficient number, since it is larger than the sum of its proper divisors (2019941821).

321131331013211 is a wasteful number, since it uses less digits than its factorization.

321131331013211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019941820.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 321131331013211 its reverse (112310133131123), we get a palindrome (433441464144334).

The spelling of 321131331013211 in words is "three hundred twenty-one trillion, one hundred thirty-one billion, three hundred thirty-one million, thirteen thousand, two hundred eleven".