133031232432 has 120 divisors (see below), whose sum is σ = 425988035616. Its totient is φ = 37964325888.

The previous prime is 133031232431. The next prime is 133031232443. The reversal of 133031232432 is 234232130331.

133031232432 is a `hidden beast` number, since 1 + 3 + 303 + 1 + 2 + 324 + 32 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 133031232396 and 133031232405.

It is not an unprimeable number, because it can be changed into a prime (133031232431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786858 + ... + 940854.

Almost surely, 2^133031232432 is an apocalyptic number.

133031232432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133031232432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212994017808).

133031232432 is an abundant number, since it is smaller than the sum of its proper divisors (292956803184).

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

133031232432 is a wasteful number, since it uses less digits than its factorization.

133031232432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154875 (or 154866 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 133031232432 its reverse (234232130331), we get a palindrome (367263362763).

The spelling of 133031232432 in words is "one hundred thirty-three billion, thirty-one million, two hundred thirty-two thousand, four hundred thirty-two".