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230201933 = 1317707841
BaseRepresentation
bin11011011100010…
…01101001001101
3121001011110200112
431232021221031
5432412430213
634502005405
75463453443
oct1556115115
9531143615
10230201933
11108a41135
1265116865
1338900180
1422804b93
1515322ea8
hexdb89a4d

230201933 has 4 divisors (see below), whose sum is σ = 247909788. Its totient is φ = 212494080.

The previous prime is 230201863. The next prime is 230201999. The reversal of 230201933 is 339102032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149866564 + 80335369 = 12242^2 + 8963^2 .

It is a cyclic number.

It is not a de Polignac number, because 230201933 - 28 = 230201677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230201899 and 230201908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230200933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8853908 + ... + 8853933.

It is an arithmetic number, because the mean of its divisors is an integer number (61977447).

Almost surely, 2230201933 is an apocalyptic number.

It is an amenable number.

230201933 is a deficient number, since it is larger than the sum of its proper divisors (17707855).

230201933 is a wasteful number, since it uses less digits than its factorization.

230201933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17707854.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 230201933 is about 15172.4069613229. The cubic root of 230201933 is about 612.8718235483.

Adding to 230201933 its reverse (339102032), we get a palindrome (569303965).

The spelling of 230201933 in words is "two hundred thirty million, two hundred one thousand, nine hundred thirty-three".

Divisors: 1 13 17707841 230201933