31310011222 has 32 divisors (see below), whose sum is σ = 58664908800. Its totient is φ = 12221850240.

The previous prime is 31310011217. The next prime is 31310011247. The reversal of 31310011222 is 22211001313.

It is a junction number, because it is equal to n+sod(n) for n = 31310011196 and 31310011205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2114472 + ... + 2129227.

It is an arithmetic number, because the mean of its divisors is an integer number (1833278400).

Almost surely, 2^31310011222 is an apocalyptic number.

31310011222 is a deficient number, since it is larger than the sum of its proper divisors (27354897578).

31310011222 is a wasteful number, since it uses less digits than its factorization.

31310011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243756.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31310011222 its reverse (22211001313), we get a palindrome (53521012535).

Subtracting from 31310011222 its reverse (22211001313), we obtain a palindrome (9099009909).

The spelling of 31310011222 in words is "thirty-one billion, three hundred ten million, eleven thousand, two hundred twenty-two".