230509133 has 2 divisors, whose sum is σ = 230509134. Its totient is φ = 230509132.

The previous prime is 230509117. The next prime is 230509141. The reversal of 230509133 is 331905032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182871529 + 47637604 = 13523^2 + 6902^2 .

It is a cyclic number.

It is not a de Polignac number, because 230509133 - 2⁴ = 230509117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230509333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115254566 + 115254567.

It is an arithmetic number, because the mean of its divisors is an integer number (115254567).

Almost surely, 2^230509133 is an apocalyptic number.

It is an amenable number.

230509133 is a deficient number, since it is larger than the sum of its proper divisors (1).

230509133 is an equidigital number, since it uses as much as digits as its factorization.

230509133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 230509133 is about 15182.5272270462. The cubic root of 230509133 is about 613.1443242095.

The spelling of 230509133 in words is "two hundred thirty million, five hundred nine thousand, one hundred thirty-three".