Search a number
-
+
231130230 = 2357704341
BaseRepresentation
bin11011100011011…
…00010001110110
3121002220122001220
431301230101312
5433132131410
634533531210
75504401032
oct1561542166
9532818056
10231130230
11109515621
12654a3b06
1338b66866
14229a71c2
1515458070
hexdc6c476

231130230 has 16 divisors (see below), whose sum is σ = 554712624. Its totient is φ = 61634720.

The previous prime is 231130217. The next prime is 231130253. The reversal of 231130230 is 32031132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3852141 + ... + 3852200.

It is an arithmetic number, because the mean of its divisors is an integer number (34669539).

Almost surely, 2231130230 is an apocalyptic number.

231130230 is an abundant number, since it is smaller than the sum of its proper divisors (323582394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231130230 is a wasteful number, since it uses less digits than its factorization.

231130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7704351.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 231130230 is about 15202.9678023733. The cubic root of 231130230 is about 613.6945273911.

Adding to 231130230 its reverse (32031132), we get a palindrome (263161362).

The spelling of 231130230 in words is "two hundred thirty-one million, one hundred thirty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 7704341 15408682 23113023 38521705 46226046 77043410 115565115 231130230