311330021210201 has 12 divisors (see below), whose sum is σ = 371947504658148. Its totient is φ = 259642025409312.

The previous prime is 311330021210183. The next prime is 311330021210203. The reversal of 311330021210201 is 102012120033113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 209992558854400 + 101337462355801 = 14491120^2 + 10066651^2 .

It is a de Polignac number, because none of the positive numbers 2^k-311330021210201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311330021210203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85860456326 + ... + 85860459951.

It is an arithmetic number, because the mean of its divisors is an integer number (30995625388179).

Almost surely, 2^{311330021210201} is an apocalyptic number.

It is an amenable number.

311330021210201 is a deficient number, since it is larger than the sum of its proper divisors (60617483447947).

311330021210201 is a wasteful number, since it uses less digits than its factorization.

311330021210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171720916328 (or 171720916321 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311330021210201 its reverse (102012120033113), we get a palindrome (413342141243314).

The spelling of 311330021210201 in words is "three hundred eleven trillion, three hundred thirty billion, twenty-one million, two hundred ten thousand, two hundred one".