31132113222 has 16 divisors (see below), whose sum is σ = 71159116032. Its totient is φ = 8894889480.

The previous prime is 31132113217. The next prime is 31132113223. The reversal of 31132113222 is 22231123113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132113223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370620354 + ... + 370620437.

It is an arithmetic number, because the mean of its divisors is an integer number (4447444752).

Almost surely, 2^31132113222 is an apocalyptic number.

31132113222 is an abundant number, since it is smaller than the sum of its proper divisors (40027002810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31132113222 is a wasteful number, since it uses less digits than its factorization.

31132113222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741240803.

The product of its digits is 432, while the sum is 21.

Adding to 31132113222 its reverse (22231123113), we get a palindrome (53363236335).

The spelling of 31132113222 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirteen thousand, two hundred twenty-two".