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230659143 = 31113259701
BaseRepresentation
bin11011011111110…
…01010001000111
3121002000200212020
431233321101013
5433022043033
634515454223
75500366431
oct1557712107
9532020766
10230659143
111092236a0
12652b7373
1338a30300
14228c3651
15153b36b3
hexdbf9447

230659143 has 48 divisors (see below), whose sum is σ = 369982080. Its totient is φ = 126672000.

The previous prime is 230659141. The next prime is 230659193. The reversal of 230659143 is 341956032.

It is not a de Polignac number, because 230659143 - 21 = 230659141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230659141) 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 47 ways as a sum of consecutive naturals, for example, 328693 + ... + 329393.

It is an arithmetic number, because the mean of its divisors is an integer number (7707960).

Almost surely, 2230659143 is an apocalyptic number.

230659143 is a deficient number, since it is larger than the sum of its proper divisors (139322937).

230659143 is a wasteful number, since it uses less digits than its factorization.

230659143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 230659143 is about 15187.4666419387. The cubic root of 230659143 is about 613.2773020713.

The spelling of 230659143 in words is "two hundred thirty million, six hundred fifty-nine thousand, one hundred forty-three".

Divisors: 1 3 11 13 33 39 59 143 169 177 429 507 649 701 767 1859 1947 2103 2301 5577 7711 8437 9113 9971 23133 25311 27339 29913 41359 100243 109681 118469 124077 300729 329043 355407 454949 537667 1303159 1364847 1613001 3909477 5914337 6989671 17743011 20969013 76886381 230659143