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133173 = 3214797
BaseRepresentation
bin100000100000110101
320202200100
4200200311
513230143
62504313
71063155
oct404065
9222610
10133173
1191067
1265099
1348801
1436765
15296d3
hex20835

133173 has 6 divisors (see below), whose sum is σ = 192374. Its totient is φ = 88776.

The previous prime is 133169. The next prime is 133183. The reversal of 133173 is 371331.

It can be written as a sum of positive squares in only one way, i.e., 106929 + 26244 = 327^2 + 162^2 .

It is not a de Polignac number, because 133173 - 22 = 133169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7390 + ... + 7407.

2133173 is an apocalyptic number.

It is an amenable number.

133173 is a deficient number, since it is larger than the sum of its proper divisors (59201).

133173 is a wasteful number, since it uses less digits than its factorization.

133173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14803 (or 14800 counting only the distinct ones).

The product of its digits is 189, while the sum is 18.

The square root of 133173 is about 364.9287601711. The cubic root of 133173 is about 51.0668097884.

The spelling of 133173 in words is "one hundred thirty-three thousand, one hundred seventy-three".

Divisors: 1 3 9 14797 44391 133173