133231105 has 16 divisors (see below), whose sum is σ = 182939904. Its totient is φ = 91247040.

The previous prime is 133231103. The next prime is 133231121. The reversal of 133231105 is 501132331.

It is not a de Polignac number, because 133231105 - 2¹ = 133231103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133231103) 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 15 ways as a sum of consecutive naturals, for example, 35415 + ... + 38995.

It is an arithmetic number, because the mean of its divisors is an integer number (11433744).

Almost surely, 2^133231105 is an apocalyptic number.

It is an amenable number.

133231105 is a deficient number, since it is larger than the sum of its proper divisors (49708799).

133231105 is a wasteful number, since it uses less digits than its factorization.

133231105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 133231105 is about 11542.5779182988. The cubic root of 133231105 is about 510.7423573196.

Adding to 133231105 its reverse (501132331), we get a palindrome (634363436).

The spelling of 133231105 in words is "one hundred thirty-three million, two hundred thirty-one thousand, one hundred five".