Search a number
-
+
230143111 = 11173120937
BaseRepresentation
bin11011011011110…
…11010010000111
3121001001110222221
431231323102013
5432404034421
634500433211
75463120112
oct1555732207
9531043887
10230143111
11108a00a20
12650a8807
13388ac473
14227cb579
1515310841
hexdb7b487

230143111 has 8 divisors (see below), whose sum is σ = 252518544. Its totient is φ = 208009920.

The previous prime is 230143091. The next prime is 230143117. The reversal of 230143111 is 111341032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230143111 - 29 = 230142599 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 (230143117) 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 7 ways as a sum of consecutive naturals, for example, 58566 + ... + 62371.

It is an arithmetic number, because the mean of its divisors is an integer number (31564818).

Almost surely, 2230143111 is an apocalyptic number.

230143111 is a deficient number, since it is larger than the sum of its proper divisors (22375433).

230143111 is a wasteful number, since it uses less digits than its factorization.

230143111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121121.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 230143111 is about 15170.4683843314. The cubic root of 230143111 is about 612.8196180536.

Adding to 230143111 its reverse (111341032), we get a palindrome (341484143).

It can be divided in two parts, 230 and 143111, that added together give a palindrome (143341).

The spelling of 230143111 in words is "two hundred thirty million, one hundred forty-three thousand, one hundred eleven".

Divisors: 1 11 173 1903 120937 1330307 20922101 230143111