311101112101 has 4 divisors (see below), whose sum is σ = 335031966892. Its totient is φ = 287170257312.

The previous prime is 311101112099. The next prime is 311101112171. The reversal of 311101112101 is 101211101113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115936845025 + 195164267076 = 340495^2 + 441774^2 .

It is a cyclic number.

It is not a de Polignac number, because 311101112101 - 2¹ = 311101112099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 23930854777 = 311101112101 / (3 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311101112171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11965427376 + ... + 11965427401.

It is an arithmetic number, because the mean of its divisors is an integer number (83757991723).

Almost surely, 2^311101112101 is an apocalyptic number.

It is an amenable number.

311101112101 is a deficient number, since it is larger than the sum of its proper divisors (23930854791).

311101112101 is a wasteful number, since it uses less digits than its factorization.

311101112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23930854790.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 311101112101 its reverse (101211101113), we get a palindrome (412312213214).

The spelling of 311101112101 in words is "three hundred eleven billion, one hundred one million, one hundred twelve thousand, one hundred one".