31110205012 has 24 divisors (see below), whose sum is σ = 54769750560. Its totient is φ = 15461777760.

The previous prime is 31110204997. The next prime is 31110205033. The reversal of 31110205012 is 21050201113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2040883 + ... + 2056069.

It is an arithmetic number, because the mean of its divisors is an integer number (2282072940).

Almost surely, 2^31110205012 is an apocalyptic number.

It is an amenable number.

31110205012 is a deficient number, since it is larger than the sum of its proper divisors (23659545548).

31110205012 is a wasteful number, since it uses less digits than its factorization.

31110205012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18231 (or 18229 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 31110205012 its reverse (21050201113), we get a palindrome (52160406125).

The spelling of 31110205012 in words is "thirty-one billion, one hundred ten million, two hundred five thousand, twelve".