31112143222 has 16 divisors (see below), whose sum is σ = 47143468944. Its totient is φ = 15397740000.

The previous prime is 31112143147. The next prime is 31112143259. The reversal of 31112143222 is 22234121113.

It is a junction number, because it is equal to n+sod(n) for n = 31112143193 and 31112143202.

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, 774472 + ... + 813652.

It is an arithmetic number, because the mean of its divisors is an integer number (2946466809).

Almost surely, 2^31112143222 is an apocalyptic number.

31112143222 is a deficient number, since it is larger than the sum of its proper divisors (16031325722).

31112143222 is a wasteful number, since it uses less digits than its factorization.

31112143222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43215.

The product of its digits is 576, while the sum is 22.

Adding to 31112143222 its reverse (22234121113), we get a palindrome (53346264335).

The spelling of 31112143222 in words is "thirty-one billion, one hundred twelve million, one hundred forty-three thousand, two hundred twenty-two".