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230043133 = 172795997
BaseRepresentation
bin11011011011000…
…10110111111101
3121000212101212001
431231202313331
5432342340013
634454342301
75462222455
oct1555426775
9530771761
10230043133
111089428a1
126505a991
1338875ac8
14227a2d65
15152e0ddd
hexdb62dfd

230043133 has 6 divisors (see below), whose sum is σ = 244371386. Its totient is φ = 216510912.

The previous prime is 230043113. The next prime is 230043137. The reversal of 230043133 is 331340032.

It can be written as a sum of positive squares in 3 ways, for example, as 168922009 + 61121124 = 12997^2 + 7818^2 .

It is not a de Polignac number, because 230043133 - 29 = 230042621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230043133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230043137) 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 5 ways as a sum of consecutive naturals, for example, 397710 + ... + 398287.

Almost surely, 2230043133 is an apocalyptic number.

It is an amenable number.

230043133 is a deficient number, since it is larger than the sum of its proper divisors (14328253).

230043133 is an equidigital number, since it uses as much as digits as its factorization.

230043133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796031 (or 796014 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 230043133 is about 15167.1728743362. The cubic root of 230043133 is about 612.7308655180.

Adding to 230043133 its reverse (331340032), we get a palindrome (561383165).

The spelling of 230043133 in words is "two hundred thirty million, forty-three thousand, one hundred thirty-three".

Divisors: 1 17 289 795997 13531949 230043133