31110020312011 has 4 divisors (see below), whose sum is σ = 31216197856032. Its totient is φ = 31003842767992.

The previous prime is 31110020312003. The next prime is 31110020312053. The reversal of 31110020312011 is 11021302001113.

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 31110020312011 - 2³ = 31110020312003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31110020912011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53088771571 + ... + 53088772156.

It is an arithmetic number, because the mean of its divisors is an integer number (7804049464008).

Almost surely, 2^{31110020312011} is an apocalyptic number.

31110020312011 is a deficient number, since it is larger than the sum of its proper divisors (106177544021).

31110020312011 is a wasteful number, since it uses less digits than its factorization.

31110020312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106177544020.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31110020312011 its reverse (11021302001113), we get a palindrome (42131322313124).

The spelling of 31110020312011 in words is "thirty-one trillion, one hundred ten billion, twenty million, three hundred twelve thousand, eleven".