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20431444314 = 2318899180181
BaseRepresentation
bin10011000001110011…
…110001100101011010
31221201220100220120210
4103001303301211122
5313320422204224
613215220431550
71322211261021
oct230163614532
957656326523
1020431444314
118735021576
123b625485b6
131c07ba8728
14dbb7138b8
157e8a91429
hex4c1cf195a

20431444314 has 16 divisors (see below), whose sum is σ = 40865277600. Its totient is φ = 6810083280.

The previous prime is 20431444279. The next prime is 20431444331. The reversal of 20431444314 is 41344413402.

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 in 7 ways as a sum of consecutive naturals, for example, 23304 + ... + 203484.

It is an arithmetic number, because the mean of its divisors is an integer number (2554079850).

Almost surely, 220431444314 is an apocalyptic number.

20431444314 is an abundant number, since it is smaller than the sum of its proper divisors (20433833286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20431444314 is a wasteful number, since it uses less digits than its factorization.

20431444314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199085.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20431444314 its reverse (41344413402), we get a palindrome (61775857716).

The spelling of 20431444314 in words is "twenty billion, four hundred thirty-one million, four hundred forty-four thousand, three hundred fourteen".

Divisors: 1 2 3 6 18899 37798 56697 113394 180181 360362 540543 1081086 3405240719 6810481438 10215722157 20431444314