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230444109 = 347258061
BaseRepresentation
bin11011011110001…
…00110001001101
3121001121202220000
431233010301031
5432443202414
634511114513
75465512500
oct1557046115
9531552800
10230444109
11109097085
1265212a39
133898647c
1422869137
151536eb09
hexdbc4c4d

230444109 has 30 divisors (see below), whose sum is σ = 400453614. Its totient is φ = 131680080.

The previous prime is 230444089. The next prime is 230444119. The reversal of 230444109 is 901444032.

It can be written as a sum of positive squares in only one way, i.e., 168428484 + 62015625 = 12978^2 + 7875^2 .

It is not a de Polignac number, because 230444109 - 29 = 230443597 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230444119) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 25062 + ... + 32999.

Almost surely, 2230444109 is an apocalyptic number.

It is an amenable number.

230444109 is a deficient number, since it is larger than the sum of its proper divisors (170009505).

230444109 is an equidigital number, since it uses as much as digits as its factorization.

230444109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58087 (or 58071 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 230444109 is about 15180.3856670376. The cubic root of 230444109 is about 613.0866651116.

The spelling of 230444109 in words is "two hundred thirty million, four hundred forty-four thousand, one hundred nine".

Divisors: 1 3 7 9 21 27 49 63 81 147 189 441 567 1323 3969 58061 174183 406427 522549 1219281 1567647 2844989 3657843 4702941 8534967 10973529 25604901 32920587 76814703 230444109