133431312232 has 16 divisors (see below), whose sum is σ = 250187729760. Its totient is φ = 66714584304.

The previous prime is 133431312229. The next prime is 133431312233. The reversal of 133431312232 is 232213134331.

It is a self number, because there is not a number n which added to its sum of digits gives 133431312232.

It is not an unprimeable number, because it can be changed into a prime (133431312233) 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, 701803 + ... + 871429.

It is an arithmetic number, because the mean of its divisors is an integer number (15636733110).

Almost surely, 2^133431312232 is an apocalyptic number.

It is an amenable number.

133431312232 is a deficient number, since it is larger than the sum of its proper divisors (116756417528).

133431312232 is a wasteful number, since it uses less digits than its factorization.

133431312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267960 (or 267956 counting only the distinct ones).

The product of its digits is 7776, while the sum is 28.

Adding to 133431312232 its reverse (232213134331), we get a palindrome (365644446563).

The spelling of 133431312232 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred twelve thousand, two hundred thirty-two".