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210130239 = 31135917737
BaseRepresentation
bin11001000011001…
…01010100111111
3112122101201111110
430201211110333
5412243131424
632503453103
75131035414
oct1441452477
9478351443
10210130239
11a8681a60
125a457193
13346c3227
141dc9c10b
15136aac29
hexc86553f

210130239 has 16 divisors (see below), whose sum is σ = 306512640. Its totient is φ = 126989760.

The previous prime is 210130223. The next prime is 210130267. The reversal of 210130239 is 932031012.

It is a happy number.

It is not a de Polignac number, because 210130239 - 24 = 210130223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210130439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2979 + ... + 20715.

It is an arithmetic number, because the mean of its divisors is an integer number (19157040).

Almost surely, 2210130239 is an apocalyptic number.

210130239 is a deficient number, since it is larger than the sum of its proper divisors (96382401).

210130239 is a wasteful number, since it uses less digits than its factorization.

210130239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18110.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 210130239 is about 14495.8697220967. The cubic root of 210130239 is about 594.5150477321.

The spelling of 210130239 in words is "two hundred ten million, one hundred thirty thousand, two hundred thirty-nine".

Divisors: 1 3 11 33 359 1077 3949 11847 17737 53211 195107 585321 6367583 19102749 70043413 210130239