33112311312 has 20 divisors (see below), whose sum is σ = 85540137680. Its totient is φ = 11037437088.

The previous prime is 33112311301. The next prime is 33112311319. The reversal of 33112311312 is 21311321133.

It is a happy number.

It is a super-2 number, since 2×33112311312² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (33112311319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344919862 + ... + 344919957.

It is an arithmetic number, because the mean of its divisors is an integer number (4277006884).

Almost surely, 2^33112311312 is an apocalyptic number.

It is an amenable number.

33112311312 is an abundant number, since it is smaller than the sum of its proper divisors (52427826368).

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

33112311312 is a wasteful number, since it uses less digits than its factorization.

33112311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689839830 (or 689839824 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 33112311312 its reverse (21311321133), we get a palindrome (54423632445).

The spelling of 33112311312 in words is "thirty-three billion, one hundred twelve million, three hundred eleven thousand, three hundred twelve".