133361329 has 4 divisors (see below), whose sum is σ = 134968176. Its totient is φ = 131754484.

The previous prime is 133361297. The next prime is 133361341. The reversal of 133361329 is 923163331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133361329 - 2⁵ = 133361297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133361329.

It is not an unprimeable number, because it can be changed into a prime (133365329) 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, 803299 + ... + 803464.

It is an arithmetic number, because the mean of its divisors is an integer number (33742044).

Almost surely, 2^133361329 is an apocalyptic number.

It is an amenable number.

133361329 is a deficient number, since it is larger than the sum of its proper divisors (1606847).

133361329 is an equidigital number, since it uses as much as digits as its factorization.

133361329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606846.

The product of its digits is 8748, while the sum is 31.

The square root of 133361329 is about 11548.2175680925. The cubic root of 133361329 is about 510.9087079992.

The spelling of 133361329 in words is "one hundred thirty-three million, three hundred sixty-one thousand, three hundred twenty-nine".