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23102020201 = 137717230281
BaseRepresentation
bin10101100000111111…
…001101101001101001
32012122000112012222211
4111200333031221221
5334303104121301
614340220245121
71445326634401
oct254077155151
965560465884
1023102020201
119885540787
1245889a07a1
13224225c350
141192287801
15903263051
hex560fcda69

23102020201 has 8 divisors (see below), whose sum is σ = 24882430664. Its totient is φ = 21322085760.

The previous prime is 23102020189. The next prime is 23102020237. The reversal of 23102020201 is 10202020132.

It can be written as a sum of positive squares in 4 ways, for example, as 1880523225 + 21221496976 = 43365^2 + 145676^2 .

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 23102020201 - 213 = 23102012009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (23102020301) 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, 14820 + ... + 215461.

It is an arithmetic number, because the mean of its divisors is an integer number (3110303833).

Almost surely, 223102020201 is an apocalyptic number.

It is an amenable number.

23102020201 is a deficient number, since it is larger than the sum of its proper divisors (1780410463).

23102020201 is a wasteful number, since it uses less digits than its factorization.

23102020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238011.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 23102020201 its reverse (10202020132), we get a palindrome (33304040333).

The spelling of 23102020201 in words is "twenty-three billion, one hundred two million, twenty thousand, two hundred one".

Divisors: 1 13 7717 100321 230281 2993653 1777078477 23102020201