31133123222 has 16 divisors (see below), whose sum is σ = 46815378192. Its totient is φ = 15528038400.

The previous prime is 31133123171. The next prime is 31133123233. The reversal of 31133123222 is 22232133113.

It is a super-2 number, since 2×31133123222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665158 + ... + 1683750.

It is an arithmetic number, because the mean of its divisors is an integer number (2925961137).

Almost surely, 2^31133123222 is an apocalyptic number.

31133123222 is a deficient number, since it is larger than the sum of its proper divisors (15682254970).

31133123222 is a wasteful number, since it uses less digits than its factorization.

31133123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20623.

The product of its digits is 1296, while the sum is 23.

Adding to 31133123222 its reverse (22232133113), we get a palindrome (53365256335).

The spelling of 31133123222 in words is "thirty-one billion, one hundred thirty-three million, one hundred twenty-three thousand, two hundred twenty-two".