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234330231 = 3139561943
BaseRepresentation
bin11011111011110…
…01100001110111
3121022221012122110
431331321201313
5434442031411
635130302103
75543526342
oct1575714167
9538835573
10234330231
11110300853
1266587933
1339717255
142319b459
151588b2a6
hexdf79877

234330231 has 8 divisors (see below), whose sum is σ = 314688640. Its totient is φ = 155095992.

The previous prime is 234330221. The next prime is 234330269. The reversal of 234330231 is 132033432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 234330231 - 223 = 225941623 is a prime.

It is a super-2 number, since 2×2343302312 = 109821314321026722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234330198 and 234330207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234330221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280555 + ... + 281388.

It is an arithmetic number, because the mean of its divisors is an integer number (39336080).

Almost surely, 2234330231 is an apocalyptic number.

234330231 is a deficient number, since it is larger than the sum of its proper divisors (80358409).

234330231 is a wasteful number, since it uses less digits than its factorization.

234330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562085.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 234330231 is about 15307.8486731480. The cubic root of 234330231 is about 616.5137592478.

Adding to 234330231 its reverse (132033432), we get a palindrome (366363663).

The spelling of 234330231 in words is "two hundred thirty-four million, three hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 139 417 561943 1685829 78110077 234330231