133333105 has 4 divisors (see below), whose sum is σ = 159999732. Its totient is φ = 106666480.

The previous prime is 133333103. The next prime is 133333111. The reversal of 133333105 is 501333331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501333331 = 239 ⋅2097629.

It can be written as a sum of positive squares in 2 ways, for example, as 45104656 + 88228449 = 6716^2 + 9393^2 .

It is not a de Polignac number, because 133333105 - 2¹ = 133333103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133333103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13333306 + ... + 13333315.

It is an arithmetic number, because the mean of its divisors is an integer number (39999933).

Almost surely, 2^133333105 is an apocalyptic number.

It is an amenable number.

133333105 is a deficient number, since it is larger than the sum of its proper divisors (26666627).

133333105 is an equidigital number, since it uses as much as digits as its factorization.

133333105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26666626.

The product of its (nonzero) digits is 1215, while the sum is 22.

The square root of 133333105 is about 11546.9954966649. The cubic root of 133333105 is about 510.8726633056.

Adding to 133333105 its reverse (501333331), we get a palindrome (634666436).

The spelling of 133333105 in words is "one hundred thirty-three million, three hundred thirty-three thousand, one hundred five".