31133202212 has 24 divisors (see below), whose sum is σ = 65929135104. Its totient is φ = 12557930112.

The previous prime is 31133202203. The next prime is 31133202301. The reversal of 31133202212 is 21220233113.

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, 32702468 + ... + 32703419.

It is an arithmetic number, because the mean of its divisors is an integer number (2747047296).

Almost surely, 2^31133202212 is an apocalyptic number.

It is an amenable number.

31133202212 is an abundant number, since it is smaller than the sum of its proper divisors (34795932892).

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

31133202212 is a wasteful number, since it uses less digits than its factorization.

31133202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65405915 (or 65405913 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31133202212 its reverse (21220233113), we get a palindrome (52353435325).

The spelling of 31133202212 in words is "thirty-one billion, one hundred thirty-three million, two hundred two thousand, two hundred twelve".