31112230012 has 12 divisors (see below), whose sum is σ = 54618159960. Its totient is φ = 15507041456.

The previous prime is 31112230007. The next prime is 31112230021. The reversal of 31112230012 is 21003221113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12266962 + ... + 12269497.

It is an arithmetic number, because the mean of its divisors is an integer number (4551513330).

Almost surely, 2^31112230012 is an apocalyptic number.

It is an amenable number.

31112230012 is a deficient number, since it is larger than the sum of its proper divisors (23505929948).

31112230012 is a wasteful number, since it uses less digits than its factorization.

31112230012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24536780 (or 24536778 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31112230012 its reverse (21003221113), we get a palindrome (52115451125).

The spelling of 31112230012 in words is "thirty-one billion, one hundred twelve million, two hundred thirty thousand, twelve".