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230304513 = 3791396991
BaseRepresentation
bin11011011101000…
…10101100000001
3121001100200101210
431232202230001
5432424221023
634504120333
75464361505
oct1556425401
9531320353
10230304513
1110900120a
12651660a9
1338937a7a
1422830305
1515343593
hexdba2b01

230304513 has 16 divisors (see below), whose sum is σ = 313241600. Its totient is φ = 150480720.

The previous prime is 230304479. The next prime is 230304541. The reversal of 230304513 is 315403032.

It is not a de Polignac number, because 230304513 - 26 = 230304449 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 230304513.

It is not an unprimeable number, because it can be changed into a prime (230304583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29448 + ... + 36438.

It is an arithmetic number, because the mean of its divisors is an integer number (19577600).

Almost surely, 2230304513 is an apocalyptic number.

It is an amenable number.

230304513 is a deficient number, since it is larger than the sum of its proper divisors (82937087).

230304513 is a wasteful number, since it uses less digits than its factorization.

230304513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7212.

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

The square root of 230304513 is about 15175.7870636089. The cubic root of 230304513 is about 612.9628437162.

Adding to 230304513 its reverse (315403032), we get a palindrome (545707545).

The spelling of 230304513 in words is "two hundred thirty million, three hundred four thousand, five hundred thirteen".

Divisors: 1 3 79 139 237 417 6991 10981 20973 32943 552289 971749 1656867 2915247 76768171 230304513