31112110212 has 24 divisors (see below), whose sum is σ = 75751225536. Its totient is φ = 9919803168.

The previous prime is 31112110201. The next prime is 31112110247. The reversal of 31112110212 is 21201121113.

It is a junction number, because it is equal to n+sod(n) for n = 31112110191 and 31112110200.

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, 56362243 + ... + 56362794.

It is an arithmetic number, because the mean of its divisors is an integer number (3156301064).

Almost surely, 2^31112110212 is an apocalyptic number.

It is an amenable number.

31112110212 is an abundant number, since it is smaller than the sum of its proper divisors (44639115324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31112110212 is a wasteful number, since it uses less digits than its factorization.

31112110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112725067 (or 112725065 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 31112110212 its reverse (21201121113), we get a palindrome (52313231325).

The spelling of 31112110212 in words is "thirty-one billion, one hundred twelve million, one hundred ten thousand, two hundred twelve".