133471 has 4 divisors (see below), whose sum is σ = 143752. Its totient is φ = 123192.

The previous prime is 133451. The next prime is 133481. The reversal of 133471 is 174331.

133471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133471 - 2⁵ = 133439 is a prime.

It is a super-3 number, since 3×133471³ = 7133160528138333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133451) 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, 5121 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (35938).

2¹³³⁴⁷¹ is an apocalyptic number.

133471 is a deficient number, since it is larger than the sum of its proper divisors (10281).

133471 is a wasteful number, since it uses less digits than its factorization.

133471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280.

The product of its digits is 252, while the sum is 19.

The square root of 133471 is about 365.3368308835. The cubic root of 133471 is about 51.1048719892.

The spelling of 133471 in words is "one hundred thirty-three thousand, four hundred seventy-one".