133071 has 4 divisors (see below), whose sum is σ = 177432. Its totient is φ = 88712.

The previous prime is 133069. The next prime is 133073. The reversal of 133071 is 170331.

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

It is an interprime number because it is at equal distance from previous prime (133069) and next prime (133073).

It is a cyclic number.

It is not a de Polignac number, because 133071 - 2¹ = 133069 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 133071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133073) 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, 22176 + ... + 22181.

It is an arithmetic number, because the mean of its divisors is an integer number (44358).

2¹³³⁰⁷¹ is an apocalyptic number.

133071 is a deficient number, since it is larger than the sum of its proper divisors (44361).

133071 is an equidigital number, since it uses as much as digits as its factorization.

133071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44360.

The product of its (nonzero) digits is 63, while the sum is 15.

The square root of 133071 is about 364.7889800967. The cubic root of 133071 is about 51.0537687440.

The spelling of 133071 in words is "one hundred thirty-three thousand, seventy-one".