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30444224143 = 38978262787
BaseRepresentation
bin11100010110100111…
…011111111010001111
32220120201011211100011
4130112213133322033
5444322210133033
621552541214051
72125302430654
oct342647377217
986521154304
1030444224143
1111a02a75223
125a97861327
132b4241bb18
14168b441c2b
15bd2b25ccd
hex7169dfe8f

30444224143 has 4 divisors (see below), whose sum is σ = 30522487320. Its totient is φ = 30365960968.

The previous prime is 30444224131. The next prime is 30444224171. The reversal of 30444224143 is 34142244403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34142244403 = 103331478101.

It is a cyclic number.

It is not a de Polignac number, because 30444224143 - 213 = 30444215951 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 (30444224243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39131005 + ... + 39131782.

It is an arithmetic number, because the mean of its divisors is an integer number (7630621830).

Almost surely, 230444224143 is an apocalyptic number.

30444224143 is a deficient number, since it is larger than the sum of its proper divisors (78263177).

30444224143 is an equidigital number, since it uses as much as digits as its factorization.

30444224143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78263176.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 30444224143 its reverse (34142244403), we get a palindrome (64586468546).

The spelling of 30444224143 in words is "thirty billion, four hundred forty-four million, two hundred twenty-four thousand, one hundred forty-three".

Divisors: 1 389 78262787 30444224143