133511113 has 4 divisors (see below), whose sum is σ = 139315968. Its totient is φ = 127706260.

The previous prime is 133511111. The next prime is 133511117. The reversal of 133511113 is 311115331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133511113 - 2¹ = 133511111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133511111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2902393 + ... + 2902438.

It is an arithmetic number, because the mean of its divisors is an integer number (34828992).

Almost surely, 2^133511113 is an apocalyptic number.

It is an amenable number.

133511113 is a deficient number, since it is larger than the sum of its proper divisors (5804855).

133511113 is an equidigital number, since it uses as much as digits as its factorization.

133511113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804854.

The product of its digits is 135, while the sum is 19.

The square root of 133511113 is about 11554.7009048266. The cubic root of 133511113 is about 511.0999111475.

Adding to 133511113 its reverse (311115331), we get a palindrome (444626444).

The spelling of 133511113 in words is "one hundred thirty-three million, five hundred eleven thousand, one hundred thirteen".