Search a number
-
+
20130202871 is a prime number
BaseRepresentation
bin10010101111110110…
…101000010011110111
31220221220112021000022
4102233312220103313
5312211312442441
613125300035355
71311562621052
oct225766502367
956856467008
1020130202871
11859aa7a3a9
123a99692b5b
131b8a66485c
14d8d6d9a99
157cc3d984b
hex4afda84f7

20130202871 has 2 divisors, whose sum is σ = 20130202872. Its totient is φ = 20130202870.

The previous prime is 20130202867. The next prime is 20130202903. The reversal of 20130202871 is 17820203102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20130202871 - 22 = 20130202867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20130202871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130202801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065101435 + 10065101436.

It is an arithmetic number, because the mean of its divisors is an integer number (10065101436).

Almost surely, 220130202871 is an apocalyptic number.

20130202871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130202871 is an equidigital number, since it uses as much as digits as its factorization.

20130202871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 20130202871 its reverse (17820203102), we get a palindrome (37950405973).

The spelling of 20130202871 in words is "twenty billion, one hundred thirty million, two hundred two thousand, eight hundred seventy-one".