133130311 has 4 divisors (see below), whose sum is σ = 134351800. Its totient is φ = 131908824.

The previous prime is 133130303. The next prime is 133130317. The reversal of 133130311 is 113031331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133130311 - 2³ = 133130303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133130317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610581 + ... + 610798.

It is an arithmetic number, because the mean of its divisors is an integer number (33587950).

Almost surely, 2^133130311 is an apocalyptic number.

133130311 is a deficient number, since it is larger than the sum of its proper divisors (1221489).

133130311 is a wasteful number, since it uses less digits than its factorization.

133130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221488.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 133130311 is about 11538.2109098421. The cubic root of 133130311 is about 510.6135266617.

Adding to 133130311 its reverse (113031331), we get a palindrome (246161642).

The spelling of 133130311 in words is "one hundred thirty-three million, one hundred thirty thousand, three hundred eleven".