133641111 has 8 divisors (see below), whose sum is σ = 178953840. Its totient is φ = 88711232.

The previous prime is 133641107. The next prime is 133641121. The reversal of 133641111 is 111146331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133641111 - 2² = 133641107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133641121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94896 + ... + 96293.

It is an arithmetic number, because the mean of its divisors is an integer number (22369230).

Almost surely, 2^133641111 is an apocalyptic number.

133641111 is a deficient number, since it is larger than the sum of its proper divisors (45312729).

133641111 is a wasteful number, since it uses less digits than its factorization.

133641111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191425.

The product of its digits is 216, while the sum is 21.

The square root of 133641111 is about 11560.3248656774. The cubic root of 133641111 is about 511.2657410720.

Adding to 133641111 its reverse (111146331), we get a palindrome (244787442).

The spelling of 133641111 in words is "one hundred thirty-three million, six hundred forty-one thousand, one hundred eleven".