311311201211 has 8 divisors (see below), whose sum is σ = 318573870384. Its totient is φ = 304049571840.

The previous prime is 311311201193. The next prime is 311311201249. The reversal of 311311201211 is 112102113113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311311201211 - 2⁶ = 311311201147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311311201211.

It is not an unprimeable number, because it can be changed into a prime (311311201111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363035 + ... + 868571.

It is an arithmetic number, because the mean of its divisors is an integer number (39821733798).

Almost surely, 2^311311201211 is an apocalyptic number.

311311201211 is a deficient number, since it is larger than the sum of its proper divisors (7262669173).

311311201211 is a wasteful number, since it uses less digits than its factorization.

311311201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519901.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 311311201211 its reverse (112102113113), we get a palindrome (423413314324).

The spelling of 311311201211 in words is "three hundred eleven billion, three hundred eleven million, two hundred one thousand, two hundred eleven".