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23303001221 = 79303797127
BaseRepresentation
bin10101101100111101…
…111001010010000101
32020011000201010010022
4111230331321102011
5340211032014341
614412200104525
71453320146033
oct255475712205
966130633108
1023303001221
119978a337a5
124624165145
132274a9b026
1411b0c43553
15915c12e4b
hex56cf79485

23303001221 has 8 divisors (see below), whose sum is σ = 23605989120. Its totient is φ = 23000213808.

The previous prime is 23303001167. The next prime is 23303001229. The reversal of 23303001221 is 12210030332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23303001221 - 26 = 23303001157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23303001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23303001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191360 + ... + 288486.

It is an arithmetic number, because the mean of its divisors is an integer number (2950748640).

Almost surely, 223303001221 is an apocalyptic number.

It is an amenable number.

23303001221 is a deficient number, since it is larger than the sum of its proper divisors (302987899).

23303001221 is an equidigital number, since it uses as much as digits as its factorization.

23303001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100243.

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

Adding to 23303001221 its reverse (12210030332), we get a palindrome (35513031553).

The spelling of 23303001221 in words is "twenty-three billion, three hundred three million, one thousand, two hundred twenty-one".

Divisors: 1 79 3037 97127 239923 7673033 294974699 23303001221