31012111222 has 16 divisors (see below), whose sum is σ = 47660678640. Its totient is φ = 15128487712.

The previous prime is 31012111199. The next prime is 31012111231. The reversal of 31012111222 is 22211121013.

It is a junction number, because it is equal to n+sod(n) for n = 31012111196 and 31012111205.

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, 798253 + ... + 836200.

It is an arithmetic number, because the mean of its divisors is an integer number (2978792415).

Almost surely, 2^31012111222 is an apocalyptic number.

31012111222 is a deficient number, since it is larger than the sum of its proper divisors (16648567418).

31012111222 is a wasteful number, since it uses less digits than its factorization.

31012111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634687.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 31012111222 its reverse (22211121013), we get a palindrome (53223232235).

The spelling of 31012111222 in words is "thirty-one billion, twelve million, one hundred eleven thousand, two hundred twenty-two".