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310144231213 = 2184114200093
BaseRepresentation
bin1001000001101100000…
…10010110011100101101
31002122112111002100220021
410200312002112130231
520040133410344323
6354251151122141
731256443316425
oct4406602263455
91078474070807
10310144231213
1110a593373363
1250136813351
132332867829b
14110224cb485
15810305c05d
hex483609672d

310144231213 has 4 divisors (see below), whose sum is σ = 310158453148. Its totient is φ = 310130009280.

The previous prime is 310144231207. The next prime is 310144231289. The reversal of 310144231213 is 312132441013.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5984260164 + 304159971049 = 77358^2 + 551507^2 .

It is a cyclic number.

It is not a de Polignac number, because 310144231213 - 25 = 310144231181 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 (310144231613) 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, 7078206 + ... + 7121887.

It is an arithmetic number, because the mean of its divisors is an integer number (77539613287).

Almost surely, 2310144231213 is an apocalyptic number.

It is an amenable number.

310144231213 is a deficient number, since it is larger than the sum of its proper divisors (14221935).

310144231213 is a wasteful number, since it uses less digits than its factorization.

310144231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14221934.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 310144231213 its reverse (312132441013), we get a palindrome (622276672226).

The spelling of 310144231213 in words is "three hundred ten billion, one hundred forty-four million, two hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 21841 14200093 310144231213