Search a number
-
+
13202281 is a prime number
BaseRepresentation
bin110010010111…
…001101101001
3220211202010101
4302113031221
511334433111
61150545401
7220134421
oct62271551
926752111
1013202281
1174a8084
124508261
132973301
141a79481
15125bbc1
hexc97369

13202281 has 2 divisors, whose sum is σ = 13202282. Its totient is φ = 13202280.

The previous prime is 13202263. The next prime is 13202297. The reversal of 13202281 is 18220231.

13202281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10830681 + 2371600 = 3291^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 13202281 - 217 = 13071209 is a prime.

It is a super-2 number, since 2×132022812 = 348600447205922, which contains 22 as substring.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (13202381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601140 + 6601141.

It is an arithmetic number, because the mean of its divisors is an integer number (6601141).

Almost surely, 213202281 is an apocalyptic number.

It is an amenable number.

13202281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13202281 is an equidigital number, since it uses as much as digits as its factorization.

13202281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13202281 is about 3633.4943236504. The cubic root of 13202281 is about 236.3467623376.

The spelling of 13202281 in words is "thirteen million, two hundred two thousand, two hundred eighty-one".