31310120222 has 16 divisors (see below), whose sum is σ = 49038741360. Its totient is φ = 14973963648.

The previous prime is 31310120213. The next prime is 31310120227. The reversal of 31310120222 is 22202101313.

It is a self number, because there is not a number n which added to its sum of digits gives 31310120222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310120227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516363 + ... + 2528774.

It is an arithmetic number, because the mean of its divisors is an integer number (3064921335).

Almost surely, 2^31310120222 is an apocalyptic number.

31310120222 is a deficient number, since it is larger than the sum of its proper divisors (17728621138).

31310120222 is a wasteful number, since it uses less digits than its factorization.

31310120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045275.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31310120222 its reverse (22202101313), we get a palindrome (53512221535).

The spelling of 31310120222 in words is "thirty-one billion, three hundred ten million, one hundred twenty thousand, two hundred twenty-two".