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230533317 = 3371219753
BaseRepresentation
bin11011011110110…
…10100011000101
3121001210022021000
431233122203011
5433004031232
634513043513
75466333540
oct1557324305
9531708230
10230533317
11109148103
1265256599
13389b7c61
142288d857
151538b27c
hexdbda8c5

230533317 has 16 divisors (see below), whose sum is σ = 390321280. Its totient is φ = 131733216.

The previous prime is 230533309. The next prime is 230533333. The reversal of 230533317 is 713335032.

It is not a de Polignac number, because 230533317 - 23 = 230533309 is a prime.

It is a super-2 number, since 2×2305333172 = 106291220494044978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230533367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609688 + ... + 610065.

It is an arithmetic number, because the mean of its divisors is an integer number (24395080).

Almost surely, 2230533317 is an apocalyptic number.

230533317 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

230533317 is a deficient number, since it is larger than the sum of its proper divisors (159787963).

230533317 is a wasteful number, since it uses less digits than its factorization.

230533317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219769 (or 1219763 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 27.

The square root of 230533317 is about 15183.3236480028. The cubic root of 230533317 is about 613.1657662576.

Adding to 230533317 its reverse (713335032), we get a palindrome (943868349).

The spelling of 230533317 in words is "two hundred thirty million, five hundred thirty-three thousand, three hundred seventeen".

Divisors: 1 3 7 9 21 27 63 189 1219753 3659259 8538271 10977777 25614813 32933331 76844439 230533317