Search a number
-
+
230129 = 1713537
BaseRepresentation
bin111000001011110001
3102200200022
4320023301
524331004
64533225
71645634
oct701361
9380608
10230129
11147999
12b1215
1380993
145dc1b
15482be
hex382f1

230129 has 4 divisors (see below), whose sum is σ = 243684. Its totient is φ = 216576.

The previous prime is 230123. The next prime is 230137. The reversal of 230129 is 921032.

230129 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 can be written as a sum of positive squares in 2 ways, for example, as 207025 + 23104 = 455^2 + 152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13537 = 230129 / (2 + 3 + 0 + 1 + 2 + 9).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (230123) 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, 6752 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (60921).

2230129 is an apocalyptic number.

It is an amenable number.

230129 is a deficient number, since it is larger than the sum of its proper divisors (13555).

230129 is a wasteful number, since it uses less digits than its factorization.

230129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13554.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 230129 is about 479.7176252755. The cubic root of 230129 is about 61.2807092986.

Multiplying 230129 by its sum of digits (17), we get a palindrome (3912193).

The spelling of 230129 in words is "two hundred thirty thousand, one hundred twenty-nine".

Divisors: 1 17 13537 230129