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230513223 = 376837741
BaseRepresentation
bin11011011110101…
…01101001000111
3121001202021200210
431233111221013
5433002410343
634512410503
75466221133
oct1557255107
9531667623
10230513223
11109133aa6
1265246a33
13389aba75
14228863c3
1515385333
hexdbd5a47

230513223 has 4 divisors (see below), whose sum is σ = 307350968. Its totient is φ = 153675480.

The previous prime is 230513221. The next prime is 230513237. The reversal of 230513223 is 322315032.

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

It is not a de Polignac number, because 230513223 - 21 = 230513221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230513223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230513221) 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 3 ways as a sum of consecutive naturals, for example, 38418868 + ... + 38418873.

It is an arithmetic number, because the mean of its divisors is an integer number (76837742).

Almost surely, 2230513223 is an apocalyptic number.

230513223 is a deficient number, since it is larger than the sum of its proper divisors (76837745).

230513223 is an equidigital number, since it uses as much as digits as its factorization.

230513223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76837744.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 230513223 is about 15182.6619207568. The cubic root of 230513223 is about 613.1479505957.

Adding to 230513223 its reverse (322315032), we get a palindrome (552828255).

The spelling of 230513223 in words is "two hundred thirty million, five hundred thirteen thousand, two hundred twenty-three".

Divisors: 1 3 76837741 230513223