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1230200143 = 2531486053
BaseRepresentation
bin100100101010011…
…0101110101001111
310011201211122100021
41021110311311033
510004412401033
6322023243011
742325346224
oct11124656517
93151748307
101230200143
11581463637
122a3ba9467
13167b395a3
14b955194b
1573003b2d
hex49535d4f

1230200143 has 4 divisors (see below), whose sum is σ = 1230688728. Its totient is φ = 1229711560.

The previous prime is 1230200141. The next prime is 1230200183. The reversal of 1230200143 is 3410020321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3410020321 = 27283124987.

It is a cyclic number.

It is not a de Polignac number, because 1230200143 - 21 = 1230200141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230200141) 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 3 ways as a sum of consecutive naturals, for example, 240496 + ... + 245557.

It is an arithmetic number, because the mean of its divisors is an integer number (307672182).

Almost surely, 21230200143 is an apocalyptic number.

1230200143 is a deficient number, since it is larger than the sum of its proper divisors (488585).

1230200143 is an equidigital number, since it uses as much as digits as its factorization.

1230200143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488584.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1230200143 is about 35074.2090858796. The cubic root of 1230200143 is about 1071.4993807585.

Adding to 1230200143 its reverse (3410020321), we get a palindrome (4640220464).

The spelling of 1230200143 in words is "one billion, two hundred thirty million, two hundred thousand, one hundred forty-three".

Divisors: 1 2531 486053 1230200143