133279 has 2 divisors, whose sum is σ = 133280. Its totient is φ = 133278.

The previous prime is 133277. The next prime is 133283. The reversal of 133279 is 972331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133279 - 2¹ = 133277 is a prime.

Together with 133277, it forms a pair of twin primes.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3 + 2¹⁷ + 3⁷ + 7 + 9 .

133279 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66639 + 66640.

It is an arithmetic number, because the mean of its divisors is an integer number (66640).

2¹³³²⁷⁹ is an apocalyptic number.

133279 is a deficient number, since it is larger than the sum of its proper divisors (1).

133279 is an equidigital number, since it uses as much as digits as its factorization.

133279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 25.

The square root of 133279 is about 365.0739651084. The cubic root of 133279 is about 51.0803551925.

The spelling of 133279 in words is "one hundred thirty-three thousand, two hundred seventy-nine".