321311031211 has 16 divisors (see below), whose sum is σ = 333946999584. Its totient is φ = 308966321664.

The previous prime is 321311031203. The next prime is 321311031227. The reversal of 321311031211 is 112130113123.

It is a cyclic number.

It is not a de Polignac number, because 321311031211 - 2³ = 321311031203 is a prime.

It is a super-2 number, since 2×321311031211² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321311031311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469891 + ... + 929203.

It is an arithmetic number, because the mean of its divisors is an integer number (20871687474).

Almost surely, 2^321311031211 is an apocalyptic number.

321311031211 is a deficient number, since it is larger than the sum of its proper divisors (12635968373).

321311031211 is a wasteful number, since it uses less digits than its factorization.

321311031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459630.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 321311031211 its reverse (112130113123), we get a palindrome (433441144334).

The spelling of 321311031211 in words is "three hundred twenty-one billion, three hundred eleven million, thirty-one thousand, two hundred eleven".