133113432 has 16 divisors (see below), whose sum is σ = 332783640. Its totient is φ = 44371136.

The previous prime is 133113401. The next prime is 133113433. The reversal of 133113432 is 234311331.

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

It is a junction number, because it is equal to n+sod(n) for n = 133113399 and 133113408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133113433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773173 + ... + 2773220.

Almost surely, 2^133113432 is an apocalyptic number.

133113432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133113432 is an abundant number, since it is smaller than the sum of its proper divisors (199670208).

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

133113432 is a wasteful number, since it uses less digits than its factorization.

133113432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546402 (or 5546398 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 133113432 is about 11537.4794474356. The cubic root of 133113432 is about 510.5919462770.

Adding to 133113432 its reverse (234311331), we get a palindrome (367424763).

The spelling of 133113432 in words is "one hundred thirty-three million, one hundred thirteen thousand, four hundred thirty-two".