133148235 has 32 divisors (see below), whose sum is σ = 233021952. Its totient is φ = 64385280.

The previous prime is 133148231. The next prime is 133148263. The reversal of 133148235 is 532841331.

It is not a de Polignac number, because 133148235 - 2² = 133148231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133148231) 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 31 ways as a sum of consecutive naturals, for example, 79527 + ... + 81183.

It is an arithmetic number, because the mean of its divisors is an integer number (7281936).

Almost surely, 2^133148235 is an apocalyptic number.

133148235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133148235 is a deficient number, since it is larger than the sum of its proper divisors (99873717).

133148235 is a wasteful number, since it uses less digits than its factorization.

133148235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163.

The product of its digits is 8640, while the sum is 30.

The square root of 133148235 is about 11538.9876072383. The cubic root of 133148235 is about 510.6364411182.

Adding to 133148235 its reverse (532841331), we get a palindrome (665989566).

The spelling of 133148235 in words is "one hundred thirty-three million, one hundred forty-eight thousand, two hundred thirty-five".