31112313322222 has 12 divisors (see below), whose sum is σ = 51296747998608. Its totient is φ = 14141960600900.

The previous prime is 31112313322163. The next prime is 31112313322241. The reversal of 31112313322222 is 22222331321113.

It is a super-2 number, since 2×31112313322222² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64281638854 + ... + 64281639337.

It is an arithmetic number, because the mean of its divisors is an integer number (4274728999884).

Almost surely, 2^{31112313322222} is an apocalyptic number.

31112313322222 is a deficient number, since it is larger than the sum of its proper divisors (20184434676386).

31112313322222 is a wasteful number, since it uses less digits than its factorization.

31112313322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128563278215 (or 128563278204 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 31112313322222 its reverse (22222331321113), we get a palindrome (53334644643335).

The spelling of 31112313322222 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirteen million, three hundred twenty-two thousand, two hundred twenty-two".