133320165 has 32 divisors (see below), whose sum is σ = 234289152. Its totient is φ = 64200000.

The previous prime is 133320127. The next prime is 133320211. The reversal of 133320165 is 561023331.

It is a happy number.

It is not a de Polignac number, because 133320165 - 2⁹ = 133319653 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22240 + ... + 27590.

It is an arithmetic number, because the mean of its divisors is an integer number (7321536).

Almost surely, 2^133320165 is an apocalyptic number.

133320165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133320165 is a deficient number, since it is larger than the sum of its proper divisors (100968987).

133320165 is a wasteful number, since it uses less digits than its factorization.

133320165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 133320165 is about 11546.4351641535. The cubic root of 133320165 is about 510.8561360119.

Adding to 133320165 its reverse (561023331), we get a palindrome (694343496).

The spelling of 133320165 in words is "one hundred thirty-three million, three hundred twenty thousand, one hundred sixty-five".