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231083684 = 221335312589
BaseRepresentation
bin11011100011000…
…00111010100100
3121002211021012222
431301200322210
5433124134214
634532531512
75504115236
oct1561407244
9532737188
10231083684
11109493657
1265480b98
1338b4b610
1422994256
151544938e
hexdc60ea4

231083684 has 24 divisors (see below), whose sum is σ = 436772280. Its totient is φ = 106343424.

The previous prime is 231083683. The next prime is 231083701. The reversal of 231083684 is 486380132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2166784 + 228916900 = 1472^2 + 15130^2 .

It is a super-2 number, since 2×2310836842 = 106799338022023712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231083683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12062 + ... + 24650.

It is an arithmetic number, because the mean of its divisors is an integer number (18198845).

Almost surely, 2231083684 is an apocalyptic number.

It is an amenable number.

231083684 is a deficient number, since it is larger than the sum of its proper divisors (205688596).

231083684 is a wasteful number, since it uses less digits than its factorization.

231083684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12959 (or 12957 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 231083684 is about 15201.4369057665. The cubic root of 231083684 is about 613.6533284774.

The spelling of 231083684 in words is "two hundred thirty-one million, eighty-three thousand, six hundred eighty-four".

Divisors: 1 2 4 13 26 52 353 706 1412 4589 9178 12589 18356 25178 50356 163657 327314 654628 4443917 8887834 17775668 57770921 115541842 231083684