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230191245 = 32523376011
BaseRepresentation
bin11011011100001…
…11000010001101
3121001010221000200
431232013002031
5432412104440
634501444113
75463410334
oct1556070215
9531127020
10230191245
11108a340a9
1265110639
13388c834b
1422800d1b
151531ec30
hexdb8708d

230191245 has 48 divisors (see below), whose sum is σ = 427669632. Its totient is φ = 114238080.

The previous prime is 230191223. The next prime is 230191249. The reversal of 230191245 is 542191032.

230191245 is a `hidden beast` number, since 230 + 191 + 245 = 666.

230191245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-230191245 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230191249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35290 + ... + 41300.

It is an arithmetic number, because the mean of its divisors is an integer number (8909784).

Almost surely, 2230191245 is an apocalyptic number.

It is an amenable number.

230191245 is a deficient number, since it is larger than the sum of its proper divisors (197478387).

230191245 is a wasteful number, since it uses less digits than its factorization.

230191245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082 (or 6079 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 230191245 is about 15172.0547388941. The cubic root of 230191245 is about 612.8623384333.

The spelling of 230191245 in words is "two hundred thirty million, one hundred ninety-one thousand, two hundred forty-five".

Divisors: 1 3 5 9 15 23 37 45 69 111 115 185 207 333 345 555 851 1035 1665 2553 4255 6011 7659 12765 18033 30055 38295 54099 90165 138253 222407 270495 414759 667221 691265 1112035 1244277 2001663 2073795 3336105 5115361 6221385 10008315 15346083 25576805 46038249 76730415 230191245