133481382 has 32 divisors (see below), whose sum is σ = 283230432. Its totient is φ = 41793024.

The previous prime is 133481371. The next prime is 133481389. The reversal of 133481382 is 283184331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133481389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68088 + ... + 70020.

It is an arithmetic number, because the mean of its divisors is an integer number (8850951).

Almost surely, 2^133481382 is an apocalyptic number.

133481382 is an abundant number, since it is smaller than the sum of its proper divisors (149749050).

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

133481382 is a wasteful number, since it uses less digits than its factorization.

133481382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632.

The product of its digits is 13824, while the sum is 33.

The square root of 133481382 is about 11553.4143005434. The cubic root of 133481382 is about 511.0619701372.

The spelling of 133481382 in words is "one hundred thirty-three million, four hundred eighty-one thousand, three hundred eighty-two".