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231230030 = 2599123333
BaseRepresentation
bin11011100100001…
…00101001001110
3121010002200222012
431302010221032
5433143330110
634540021222
75505265013
oct1562045116
9533080865
10231230030
111095835a9
1265531812
1338ba0105
14229d170a
1515477905
hexdc84a4e

231230030 has 16 divisors (see below), whose sum is σ = 416651904. Its totient is φ = 92394720.

The previous prime is 231230009. The next prime is 231230117. The reversal of 231230030 is 30032132.

It is a junction number, because it is equal to n+sod(n) for n = 231229987 and 231230014.

It is a congruent number.

It is an unprimeable number.

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, 1757 + ... + 21576.

It is an arithmetic number, because the mean of its divisors is an integer number (26040744).

Almost surely, 2231230030 is an apocalyptic number.

231230030 is a deficient number, since it is larger than the sum of its proper divisors (185421874).

231230030 is a wasteful number, since it uses less digits than its factorization.

231230030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24331.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 231230030 is about 15206.2497020140. The cubic root of 231230030 is about 613.7828439802.

Adding to 231230030 its reverse (30032132), we get a palindrome (261262162).

The spelling of 231230030 in words is "two hundred thirty-one million, two hundred thirty thousand, thirty".

Divisors: 1 2 5 10 991 1982 4955 9910 23333 46666 116665 233330 23123003 46246006 115615015 231230030