133383 has 8 divisors (see below), whose sum is σ = 179568. Its totient is φ = 88064.

The previous prime is 133379. The next prime is 133387. The reversal of 133383 is 383331.

It is an interprime number because it is at equal distance from previous prime (133379) and next prime (133387).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133383 - 2² = 133379 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (22446).

2¹³³³⁸³ is an apocalyptic number.

133383 is a deficient number, since it is larger than the sum of its proper divisors (46185).

133383 is a wasteful number, since it uses less digits than its factorization.

133383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433.

The product of its digits is 648, while the sum is 21.

The square root of 133383 is about 365.2163742222. The cubic root of 133383 is about 51.0936380446.

The spelling of 133383 in words is "one hundred thirty-three thousand, three hundred eighty-three".