133111056 has 40 divisors (see below), whose sum is σ = 370323520. Its totient is φ = 40957056.

The previous prime is 133111049. The next prime is 133111057. The reversal of 133111056 is 650111331.

It is not an unprimeable number, because it can be changed into a prime (133111057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106036 + ... + 107283.

It is an arithmetic number, because the mean of its divisors is an integer number (9258088).

Almost surely, 2^133111056 is an apocalyptic number.

133111056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133111056 is an abundant number, since it is smaller than the sum of its proper divisors (237212464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133111056 is a wasteful number, since it uses less digits than its factorization.

133111056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213343 (or 213337 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 133111056 is about 11537.3764782120. The cubic root of 133111056 is about 510.5889083325.

Adding to 133111056 its reverse (650111331), we get a palindrome (783222387).

The spelling of 133111056 in words is "one hundred thirty-three million, one hundred eleven thousand, fifty-six".