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230432031 = 3225603559
BaseRepresentation
bin11011011110000…
…01110100011111
3121001121011022200
431233001310133
5432442311111
634510542543
75465432334
oct1557016437
9531534280
10230432031
11109088aa5
1265207a53
1338980b1b
142286498b
151536b256
hexdbc1d1f

230432031 has 6 divisors (see below), whose sum is σ = 332846280. Its totient is φ = 153621348.

The previous prime is 230432011. The next prime is 230432047. The reversal of 230432031 is 130234032.

230432031 is a `hidden beast` number, since 230 + 432 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 230432031 - 29 = 230431519 is a prime.

It is a super-2 number, since 2×2304320312 = 106197841821569922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230431995 and 230432013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230432011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12801771 + ... + 12801788.

It is an arithmetic number, because the mean of its divisors is an integer number (55474380).

Almost surely, 2230432031 is an apocalyptic number.

230432031 is a deficient number, since it is larger than the sum of its proper divisors (102414249).

230432031 is a wasteful number, since it uses less digits than its factorization.

230432031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25603565 (or 25603562 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 230432031 is about 15179.9878458449. The cubic root of 230432031 is about 613.0759539242.

Adding to 230432031 its reverse (130234032), we get a palindrome (360666063).

The spelling of 230432031 in words is "two hundred thirty million, four hundred thirty-two thousand, thirty-one".

Divisors: 1 3 9 25603559 76810677 230432031