133231313312 has 48 divisors (see below), whose sum is σ = 265214817000. Its totient is φ = 65879086080.

The previous prime is 133231313297. The next prime is 133231313317. The reversal of 133231313312 is 213313132331.

It can be written as a sum of positive squares in 4 ways, for example, as 109378364176 + 23852949136 = 330724^2 + 154444^2 .

It is not an unprimeable number, because it can be changed into a prime (133231313317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030862 + ... + 1152882.

Almost surely, 2^133231313312 is an apocalyptic number.

It is an amenable number.

133231313312 is a deficient number, since it is larger than the sum of its proper divisors (131983503688).

133231313312 is a wasteful number, since it uses less digits than its factorization.

133231313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122409 (or 122401 counting only the distinct ones).

The product of its digits is 2916, while the sum is 26.

Adding to 133231313312 its reverse (213313132331), we get a palindrome (346544445643).

The spelling of 133231313312 in words is "one hundred thirty-three billion, two hundred thirty-one million, three hundred thirteen thousand, three hundred twelve".