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231230414144 = 263612975221
BaseRepresentation
bin1101011101011001101…
…0000001110101000000
3211002211211211002202202
43113112122001311000
512242024441223034
6254120434132332
722464051043052
oct3272632016500
9732754732682
10231230414144
118a0785a4624
12389927210a8
1318a60597082
14b297ad58d2
1560350e547e
hex35d6681d40

231230414144 has 14 divisors (see below), whose sum is σ = 458847853194. Its totient is φ = 115615207040.

The previous prime is 231230414123. The next prime is 231230414183. The reversal of 231230414144 is 441414032132.

It can be written as a sum of positive squares in only one way, i.e., 142044564544 + 89185849600 = 376888^2 + 298640^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1806487547 + ... + 1806487674.

Almost surely, 2231230414144 is an apocalyptic number.

It is an amenable number.

231230414144 is a deficient number, since it is larger than the sum of its proper divisors (227617439050).

231230414144 is an equidigital number, since it uses as much as digits as its factorization.

231230414144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612975233 (or 3612975223 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 231230414144 its reverse (441414032132), we get a palindrome (672644446276).

The spelling of 231230414144 in words is "two hundred thirty-one billion, two hundred thirty million, four hundred fourteen thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 32 64 3612975221 7225950442 14451900884 28903801768 57807603536 115615207072 231230414144