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10530420223 = 75591393097
BaseRepresentation
bin10011100111010100…
…10111010111111111
31000011212211202212211
421303222113113333
5133031241421343
64500531241251
7521645044411
oct116352272777
930155752784
1010530420223
114514169634
12205a749227
13cba8638ab
1471c7969b1
1541973479d
hex273a975ff

10530420223 has 4 divisors (see below), whose sum is σ = 10531820880. Its totient is φ = 10529019568.

The previous prime is 10530420203. The next prime is 10530420227. The reversal of 10530420223 is 32202403501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32202403501 = 35267913103.

It is a cyclic number.

It is not a de Polignac number, because 10530420223 - 25 = 10530420191 is a prime.

It is a super-2 number, since 2×105304202232 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10530420194 and 10530420203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10530420227) 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, 688990 + ... + 704107.

It is an arithmetic number, because the mean of its divisors is an integer number (2632955220).

Almost surely, 210530420223 is an apocalyptic number.

10530420223 is a deficient number, since it is larger than the sum of its proper divisors (1400657).

10530420223 is an equidigital number, since it uses as much as digits as its factorization.

10530420223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400656.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 10530420223 its reverse (32202403501), we get a palindrome (42732823724).

The spelling of 10530420223 in words is "ten billion, five hundred thirty million, four hundred twenty thousand, two hundred twenty-three".

Divisors: 1 7559 1393097 10530420223