230143133 has 4 divisors (see below), whose sum is σ = 251065248. Its totient is φ = 209221020.

The previous prime is 230143117. The next prime is 230143141. The reversal of 230143133 is 331341032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230143133 - 2⁴ = 230143117 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 (230143033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10461041 + ... + 10461062.

It is an arithmetic number, because the mean of its divisors is an integer number (62766312).

Almost surely, 2^230143133 is an apocalyptic number.

It is an amenable number.

230143133 is a deficient number, since it is larger than the sum of its proper divisors (20922115).

230143133 is a wasteful number, since it uses less digits than its factorization.

230143133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20922114.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 230143133 is about 15170.4691094244. The cubic root of 230143133 is about 612.8196375806.

Adding to 230143133 its reverse (331341032), we get a palindrome (561484165).

The spelling of 230143133 in words is "two hundred thirty million, one hundred forty-three thousand, one hundred thirty-three".