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144300431 = 1113118221
BaseRepresentation
bin10001001100111…
…01100110001111
3101001112012222102
420212131212033
5243420103211
622152505315
73401350652
oct1046354617
9331465872
10144300431
11744aa060
12403ab23b
1323b84892
1415243899
15ca05a3b
hex899d98f

144300431 has 4 divisors (see below), whose sum is σ = 157418664. Its totient is φ = 131182200.

The previous prime is 144300353. The next prime is 144300439. The reversal of 144300431 is 134003441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144300431 - 226 = 77191567 is a prime.

It is a super-2 number, since 2×1443004312 = 41645228773571522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144300439) 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, 6559100 + ... + 6559121.

It is an arithmetic number, because the mean of its divisors is an integer number (39354666).

Almost surely, 2144300431 is an apocalyptic number.

144300431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144300431 is a deficient number, since it is larger than the sum of its proper divisors (13118233).

144300431 is a wasteful number, since it uses less digits than its factorization.

144300431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13118232.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 144300431 is about 12012.5114359987. The cubic root of 144300431 is about 524.5125404315.

Adding to 144300431 its reverse (134003441), we get a palindrome (278303872).

The spelling of 144300431 in words is "one hundred forty-four million, three hundred thousand, four hundred thirty-one".

Divisors: 1 11 13118221 144300431