133530109 has 2 divisors, whose sum is σ = 133530110. Its totient is φ = 133530108.

The previous prime is 133530107. The next prime is 133530139. The reversal of 133530109 is 901035331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80604484 + 52925625 = 8978^2 + 7275^2 .

It is a cyclic number.

It is not a de Polignac number, because 133530109 - 2¹ = 133530107 is a prime.

Together with 133530107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133530107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66765054 + 66765055.

It is an arithmetic number, because the mean of its divisors is an integer number (66765055).

Almost surely, 2^133530109 is an apocalyptic number.

It is an amenable number.

133530109 is a deficient number, since it is larger than the sum of its proper divisors (1).

133530109 is an equidigital number, since it uses as much as digits as its factorization.

133530109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 25.

The square root of 133530109 is about 11555.5228786931. The cubic root of 133530109 is about 511.1241498127.

The spelling of 133530109 in words is "one hundred thirty-three million, five hundred thirty thousand, one hundred nine".