230215133 has 2 divisors, whose sum is σ = 230215134. Its totient is φ = 230215132.

The previous prime is 230215099. The next prime is 230215171. The reversal of 230215133 is 331512032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208889209 + 21325924 = 14453^2 + 4618^2 .

It is a cyclic number.

It is not a de Polignac number, because 230215133 - 2²⁰ = 229166557 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 (230215033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115107566 + 115107567.

It is an arithmetic number, because the mean of its divisors is an integer number (115107567).

Almost surely, 2^230215133 is an apocalyptic number.

It is an amenable number.

230215133 is a deficient number, since it is larger than the sum of its proper divisors (1).

230215133 is an equidigital number, since it uses as much as digits as its factorization.

230215133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 230215133 is about 15172.8419552831. The cubic root of 230215133 is about 612.8835375442.

Adding to 230215133 its reverse (331512032), we get a palindrome (561727165).

The spelling of 230215133 in words is "two hundred thirty million, two hundred fifteen thousand, one hundred thirty-three".