133130523 has 8 divisors (see below), whose sum is σ = 183233536. Its totient is φ = 85890600.

The previous prime is 133130513. The next prime is 133130531. The reversal of 133130523 is 325031331.

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

It is not a de Polignac number, because 133130523 - 2²² = 128936219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133130523.

It is not an unprimeable number, because it can be changed into a prime (133130513) 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, 715663 + ... + 715848.

It is an arithmetic number, because the mean of its divisors is an integer number (22904192).

Almost surely, 2^133130523 is an apocalyptic number.

133130523 is a deficient number, since it is larger than the sum of its proper divisors (50103013).

133130523 is a wasteful number, since it uses less digits than its factorization.

133130523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431545.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 133130523 is about 11538.2200967047. The cubic root of 133130523 is about 510.6137976995.

Adding to 133130523 its reverse (325031331), we get a palindrome (458161854).

The spelling of 133130523 in words is "one hundred thirty-three million, one hundred thirty thousand, five hundred twenty-three".