133231321312 has 48 divisors (see below), whose sum is σ = 273779079840. Its totient is φ = 63701727232.

The previous prime is 133231321309. The next prime is 133231321357. The reversal of 133231321312 is 213123132331.

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, 2868708 + ... + 2914780.

It is an arithmetic number, because the mean of its divisors is an integer number (5703730830).

Almost surely, 2^133231321312 is an apocalyptic number.

It is an amenable number.

133231321312 is an abundant number, since it is smaller than the sum of its proper divisors (140547758528).

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

133231321312 is a wasteful number, since it uses less digits than its factorization.

133231321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50035 (or 50027 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 133231321312 its reverse (213123132331), we get a palindrome (346354453643).

The spelling of 133231321312 in words is "one hundred thirty-three billion, two hundred thirty-one million, three hundred twenty-one thousand, three hundred twelve".