31130113222 has 32 divisors (see below), whose sum is σ = 50523782400. Its totient is φ = 14300289408.

The previous prime is 31130113187. The next prime is 31130113237. The reversal of 31130113222 is 22231103113.

It is a self number, because there is not a number n which added to its sum of digits gives 31130113222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5145003 + ... + 5151049.

It is an arithmetic number, because the mean of its divisors is an integer number (1578868200).

Almost surely, 2^31130113222 is an apocalyptic number.

31130113222 is a deficient number, since it is larger than the sum of its proper divisors (19393669178).

31130113222 is a wasteful number, since it uses less digits than its factorization.

31130113222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31130113222 its reverse (22231103113), we get a palindrome (53361216335).

The spelling of 31130113222 in words is "thirty-one billion, one hundred thirty million, one hundred thirteen thousand, two hundred twenty-two".