31110321111011 has 4 divisors (see below), whose sum is σ = 32940339999912. Its totient is φ = 29280302222112.

The previous prime is 31110321110993. The next prime is 31110321111041. The reversal of 31110321111011 is 11011112301113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31110321111011 - 2¹⁴ = 31110321094627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1830018888883 = 31110321111011 / (3 + 1 + 1 + 1 + 0 + 3 + 2 + 1 + 1 + 1 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31110321111041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915009444425 + ... + 915009444458.

It is an arithmetic number, because the mean of its divisors is an integer number (8235084999978).

Almost surely, 2^{31110321111011} is an apocalyptic number.

31110321111011 is a deficient number, since it is larger than the sum of its proper divisors (1830018888901).

31110321111011 is a wasteful number, since it uses less digits than its factorization.

31110321111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830018888900.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 31110321111011 its reverse (11011112301113), we get a palindrome (42121433412124).

The spelling of 31110321111011 in words is "thirty-one trillion, one hundred ten billion, three hundred twenty-one million, one hundred eleven thousand, eleven".