133130433 has 8 divisors (see below), whose sum is σ = 178409088. Its totient is φ = 88302704.

The previous prime is 133130429. The next prime is 133130441. The reversal of 133130433 is 334031331.

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 133130433 - 2² = 133130429 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133130533) 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, 112041 + ... + 113222.

It is an arithmetic number, because the mean of its divisors is an integer number (22301136).

Almost surely, 2^133130433 is an apocalyptic number.

It is an amenable number.

133130433 is a deficient number, since it is larger than the sum of its proper divisors (45278655).

133130433 is a wasteful number, since it uses less digits than its factorization.

133130433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225463.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 133130433 is about 11538.2161966224. The cubic root of 133130433 is about 510.6136826363.

Adding to 133130433 its reverse (334031331), we get a palindrome (467161764).

The spelling of 133130433 in words is "one hundred thirty-three million, one hundred thirty thousand, four hundred thirty-three".