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23130300221 = 7231574871879
BaseRepresentation
bin10101100010101011…
…000101111100111101
32012200222201222212222
4111202223011330331
5334332324101341
614343110335125
71446122210420
oct254253057475
965628658788
1023130300221
11989a4a69a6
12459635a4a5
1322480814a2
141195d299b7
1590599c44b
hex562ac5f3d

23130300221 has 32 divisors (see below), whose sum is σ = 27831459840. Its totient is φ = 18794483136.

The previous prime is 23130300203. The next prime is 23130300239. The reversal of 23130300221 is 12200303132.

It is an interprime number because it is at equal distance from previous prime (23130300203) and next prime (23130300239).

It is a cyclic number.

It is not a de Polignac number, because 23130300221 - 218 = 23130038077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23130300221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130300241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12308960 + ... + 12310838.

It is an arithmetic number, because the mean of its divisors is an integer number (869733120).

Almost surely, 223130300221 is an apocalyptic number.

It is an amenable number.

23130300221 is a deficient number, since it is larger than the sum of its proper divisors (4701159619).

23130300221 is a wasteful number, since it uses less digits than its factorization.

23130300221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23130300221 its reverse (12200303132), we get a palindrome (35330603353).

The spelling of 23130300221 in words is "twenty-three billion, one hundred thirty million, three hundred thousand, two hundred twenty-one".

Divisors: 1 7 23 157 161 487 1099 1879 3409 3611 11201 13153 25277 43217 76459 78407 295003 302519 535213 915073 1758557 2065021 6405511 6785069 12309899 21046679 47495483 143666461 147326753 1005665227 3304328603 23130300221