[go: up one dir, main page]

Search a number
-
+
230791 = 1120981
BaseRepresentation
bin111000010110000111
3102201120211
4320112013
524341131
64540251
71650601
oct702607
9381524
10230791
11148440
12b1687
1381082
1460171
15485b1
hex38587

230791 has 4 divisors (see below), whose sum is σ = 251784. Its totient is φ = 209800.

The previous prime is 230779. The next prime is 230807. The reversal of 230791 is 197032.

230791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230791 - 27 = 230663 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230761) 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, 10480 + ... + 10501.

It is an arithmetic number, because the mean of its divisors is an integer number (62946).

2230791 is an apocalyptic number.

230791 is a deficient number, since it is larger than the sum of its proper divisors (20993).

230791 is a wasteful number, since it uses less digits than its factorization.

230791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 230791 is about 480.4071190147. The cubic root of 230791 is about 61.3394140422.

The spelling of 230791 in words is "two hundred thirty thousand, seven hundred ninety-one".

Divisors: 1 11 20981 230791