133334165 has 4 divisors (see below), whose sum is σ = 160001004. Its totient is φ = 106667328.

The previous prime is 133334161. The next prime is 133334171. The reversal of 133334165 is 561433331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38427601 + 94906564 = 6199^2 + 9742^2 .

It is a cyclic number.

It is not a de Polignac number, because 133334165 - 2² = 133334161 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 (133334161) 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, 13333412 + ... + 13333421.

It is an arithmetic number, because the mean of its divisors is an integer number (40000251).

Almost surely, 2^133334165 is an apocalyptic number.

It is an amenable number.

133334165 is a deficient number, since it is larger than the sum of its proper divisors (26666839).

133334165 is an equidigital number, since it uses as much as digits as its factorization.

133334165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26666838.

The product of its digits is 9720, while the sum is 29.

The square root of 133334165 is about 11547.0413959594. The cubic root of 133334165 is about 510.8740171168.

Adding to 133334165 its reverse (561433331), we get a palindrome (694767496).

The spelling of 133334165 in words is "one hundred thirty-three million, three hundred thirty-four thousand, one hundred sixty-five".