31132120222 has 16 divisors (see below), whose sum is σ = 53388228960. Its totient is φ = 13337617248.

The previous prime is 31132120207. The next prime is 31132120297. The reversal of 31132120222 is 22202123113.

It is a super-2 number, since 2×31132120222² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31132120222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352197 + ... + 431632.

It is an arithmetic number, because the mean of its divisors is an integer number (3336764310).

Almost surely, 2^31132120222 is an apocalyptic number.

31132120222 is a deficient number, since it is larger than the sum of its proper divisors (22256108738).

31132120222 is a wasteful number, since it uses less digits than its factorization.

31132120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786675.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31132120222 its reverse (22202123113), we get a palindrome (53334243335).

The spelling of 31132120222 in words is "thirty-one billion, one hundred thirty-two million, one hundred twenty thousand, two hundred twenty-two".