133111983 has 8 divisors (see below), whose sum is σ = 177762096. Its totient is φ = 88601600.

The previous prime is 133111973. The next prime is 133112003. The reversal of 133111983 is 389111331.

It is a happy number.

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 133111983 - 2⁹ = 133111471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133111983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133111933) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32688 + ... + 36533.

It is an arithmetic number, because the mean of its divisors is an integer number (22220262).

Almost surely, 2^133111983 is an apocalyptic number.

133111983 is a deficient number, since it is larger than the sum of its proper divisors (44650113).

133111983 is an equidigital number, since it uses as much as digits as its factorization.

133111983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69865.

The product of its digits is 1944, while the sum is 30.

The square root of 133111983 is about 11537.4166519200. The cubic root of 133111983 is about 510.5900935955.

The spelling of 133111983 in words is "one hundred thirty-three million, one hundred eleven thousand, nine hundred eighty-three".