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230340331 = 13236173173
BaseRepresentation
bin11011011101010…
…11011011101011
3121001102111112101
431232223123223
5432431342311
634504554231
75464601104
oct1556533353
9531374471
10230340331
11109026111
1265182977
133894b170
142283d3ab
151534dec1
hexdbab6eb

230340331 has 32 divisors (see below), whose sum is σ = 268232832. Its totient is φ = 196162560.

The previous prime is 230340317. The next prime is 230340343. The reversal of 230340331 is 133043032.

It is a cyclic number.

It is not a de Polignac number, because 230340331 - 219 = 229816043 is a prime.

It is a super-2 number, since 2×2303403312 = 106113336170379122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230340299 and 230340308.

It is not an unprimeable number, because it can be changed into a prime (230340031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1331361 + ... + 1331533.

It is an arithmetic number, because the mean of its divisors is an integer number (8382276).

Almost surely, 2230340331 is an apocalyptic number.

230340331 is a deficient number, since it is larger than the sum of its proper divisors (37892501).

230340331 is a wasteful number, since it uses less digits than its factorization.

230340331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 230340331 is about 15176.9671212664. The cubic root of 230340331 is about 612.9946189873.

Adding to 230340331 its reverse (133043032), we get a palindrome (363383363).

The spelling of 230340331 in words is "two hundred thirty million, three hundred forty thousand, three hundred thirty-one".

Divisors: 1 13 23 61 73 173 299 793 949 1403 1679 2249 3979 4453 10553 12629 18239 21827 51727 57889 102419 137189 164177 242719 290467 770369 1331447 3155347 3776071 10014797 17718487 230340331