133363 has 4 divisors (see below), whose sum is σ = 134248. Its totient is φ = 132480.

The previous prime is 133351. The next prime is 133379. The reversal of 133363 is 363331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 363331 = 23 ⋅15797.

It is a cyclic number.

It is not a de Polignac number, because 133363 - 2⁹ = 132851 is a prime.

It is a Duffinian number.

133363 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 133363.

It is not an unprimeable number, because it can be changed into a prime (133303) 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, 153 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (33562).

2¹³³³⁶³ is an apocalyptic number.

133363 is a deficient number, since it is larger than the sum of its proper divisors (885).

133363 is an equidigital number, since it uses as much as digits as its factorization.

133363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its digits is 486, while the sum is 19.

The square root of 133363 is about 365.1889921671. The cubic root of 133363 is about 51.0910841863.

Adding to 133363 its reverse (363331), we get a palindrome (496694).

It can be divided in two parts, 133 and 363, that added together give a triangular number (496 = T₃₁).

The spelling of 133363 in words is "one hundred thirty-three thousand, three hundred sixty-three".