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143144323 = 720449189
BaseRepresentation
bin10001000100000…
…11010110000011
3100222100111002121
420202003112003
5243121104243
622112025111
73355464250
oct1042032603
9328314077
10143144323
117388a4a3
123bb32197
132386b5aa
1415022427
15c8781ed
hex8883583

143144323 has 4 divisors (see below), whose sum is σ = 163593520. Its totient is φ = 122695128.

The previous prime is 143144311. The next prime is 143144327. The reversal of 143144323 is 323441341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323441341 = 2314062667.

It is a cyclic number.

It is not a de Polignac number, because 143144323 - 213 = 143136131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143144327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10224588 + ... + 10224601.

It is an arithmetic number, because the mean of its divisors is an integer number (40898380).

Almost surely, 2143144323 is an apocalyptic number.

143144323 is a deficient number, since it is larger than the sum of its proper divisors (20449197).

143144323 is an equidigital number, since it uses as much as digits as its factorization.

143144323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20449196.

The product of its digits is 3456, while the sum is 25.

The square root of 143144323 is about 11964.2936690805. The cubic root of 143144323 is about 523.1080174217.

Adding to 143144323 its reverse (323441341), we get a palindrome (466585664).

It can be divided in two parts, 1431 and 44323, that added together give a palindrome (45754).

The spelling of 143144323 in words is "one hundred forty-three million, one hundred forty-four thousand, three hundred twenty-three".

Divisors: 1 7 20449189 143144323