311212212113 has 6 divisors (see below), whose sum is σ = 342076233282. Its totient is φ = 282920192720.

The previous prime is 311212212083. The next prime is 311212212187.

311212212113 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 290485427089 + 20726785024 = 538967^2 + 143968^2 .

It is not a de Polignac number, because 311212212113 - 2¹⁴ = 311212195729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311212212013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1286000756 + ... + 1286000997.

It is an arithmetic number, because the mean of its divisors is an integer number (57012705547).

Almost surely, 2^311212212113 is an apocalyptic number.

It is an amenable number.

311212212113 is a deficient number, since it is larger than the sum of its proper divisors (30864021169).

311212212113 is a wasteful number, since it uses less digits than its factorization.

311212212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572001775 (or 2572001764 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

It can be divided in two parts, 311212 and 212113, that added together give a palindrome (523325).

The spelling of 311212212113 in words is "three hundred eleven billion, two hundred twelve million, two hundred twelve thousand, one hundred thirteen".