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243230125 = 537512591
BaseRepresentation
bin11100111111101…
…10010110101101
3121221200101000011
432133312112231
5444231331000
640045133221
76012264505
oct1637662655
9557611004
10243230125
1111532a436
126955a211
133b512168
1424436a05
15165482ba
hexe7f65ad

243230125 has 16 divisors (see below), whose sum is σ = 304072704. Its totient is φ = 194250000.

The previous prime is 243230111. The next prime is 243230137. The reversal of 243230125 is 521032342.

It is a de Polignac number, because none of the positive numbers 2k-243230125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243230096 and 243230105.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 92580 + ... + 95170.

It is an arithmetic number, because the mean of its divisors is an integer number (19004544).

Almost surely, 2243230125 is an apocalyptic number.

243230125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243230125 is a deficient number, since it is larger than the sum of its proper divisors (60842579).

243230125 is an equidigital number, since it uses as much as digits as its factorization.

243230125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 243230125 is about 15595.8367842191. The cubic root of 243230125 is about 624.2220721269. Note that the first 3 decimals are identical.

Adding to 243230125 its reverse (521032342), we get a palindrome (764262467).

The spelling of 243230125 in words is "two hundred forty-three million, two hundred thirty thousand, one hundred twenty-five".

Divisors: 1 5 25 125 751 2591 3755 12955 18775 64775 93875 323875 1945841 9729205 48646025 243230125