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223131230 = 2579113499
BaseRepresentation
bin11010100110010…
…11011001011110
3120112212020111122
431103023121132
5424110144410
634050250542
75346404240
oct1523133136
9515766448
10223131230
11104a51883
1262886a52
13372c5a1a
14218c4090
15148c7e55
hexd4cb65e

223131230 has 32 divisors (see below), whose sum is σ = 459648000. Its totient is φ = 76396320.

The previous prime is 223131187. The next prime is 223131247. The reversal of 223131230 is 32131322.

It is a super-3 number, since 3×2231312303 (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223131199 and 223131208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62021 + ... + 65519.

It is an arithmetic number, because the mean of its divisors is an integer number (14364000).

Almost surely, 2223131230 is an apocalyptic number.

223131230 is an abundant number, since it is smaller than the sum of its proper divisors (236516770).

223131230 is a wasteful number, since it uses less digits than its factorization.

223131230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 223131230 is about 14937.5777822243. The cubic root of 223131230 is about 606.5316290971.

Adding to 223131230 its reverse (32131322), we get a palindrome (255262552).

The spelling of 223131230 in words is "two hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 911 1822 3499 4555 6377 6998 9110 12754 17495 24493 31885 34990 48986 63770 122465 244930 3187589 6375178 15937945 22313123 31875890 44626246 111565615 223131230