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230340533 = 2912376421
BaseRepresentation
bin11011011101010…
…11011110110101
3121001102111210212
431232223132311
5432431344113
634504555205
75464601513
oct1556533665
9531374725
10230340533
11109026285
1265182b05
133894b297
142283d4b3
151534e0a8
hexdbab7b5

230340533 has 8 divisors (see below), whose sum is σ = 238513080. Its totient is φ = 222183360.

The previous prime is 230340529. The next prime is 230340541. The reversal of 230340533 is 335043032.

It can be written as a sum of positive squares in 4 ways, for example, as 38850289 + 191490244 = 6233^2 + 13838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230340533 - 22 = 230340529 is a prime.

It is a super-2 number, since 2×2303405332 = 106113522285448178, 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 = 230340499 and 230340508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230340563) 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 7 ways as a sum of consecutive naturals, for example, 32663 + ... + 39083.

It is an arithmetic number, because the mean of its divisors is an integer number (29814135).

Almost surely, 2230340533 is an apocalyptic number.

It is an amenable number.

230340533 is a deficient number, since it is larger than the sum of its proper divisors (8172547).

230340533 is a wasteful number, since it uses less digits than its factorization.

230340533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687.

The product of its (nonzero) digits is 3240, while the sum is 23.

The square root of 230340533 is about 15176.9737760859. The cubic root of 230340533 is about 612.9947981785.

Adding to 230340533 its reverse (335043032), we get a palindrome (565383565).

The spelling of 230340533 in words is "two hundred thirty million, three hundred forty thousand, five hundred thirty-three".

Divisors: 1 29 1237 6421 35873 186209 7942777 230340533