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30221233223 = 65027464749
BaseRepresentation
bin11100001001010100…
…110110110001000111
32220000011120201022012
4130021110312301013
5443343113430343
621514453524435
72116624146446
oct341124666107
986004521265
1030221233223
11118a9109905
125a3504371b
132b08174c2c
141669996d5d
15bbd279718
hex709536c47

30221233223 has 4 divisors (see below), whose sum is σ = 30221763000. Its totient is φ = 30220703448.

The previous prime is 30221233171. The next prime is 30221233243. The reversal of 30221233223 is 32233212203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32233212203 = 66571484193.

It is a cyclic number.

It is not a de Polignac number, because 30221233223 - 28 = 30221232967 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 (30221233243) 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, 167348 + ... + 297401.

It is an arithmetic number, because the mean of its divisors is an integer number (7555440750).

Almost surely, 230221233223 is an apocalyptic number.

30221233223 is a deficient number, since it is larger than the sum of its proper divisors (529777).

30221233223 is an equidigital number, since it uses as much as digits as its factorization.

30221233223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529776.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 30221233223 its reverse (32233212203), we get a palindrome (62454445426).

The spelling of 30221233223 in words is "thirty billion, two hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty-three".

Divisors: 1 65027 464749 30221233223