Search a number
BaseRepresentation
bin101101010100001
31011211022
411222201
51220301
6255225
7124433
oct55241
934738
1023201
1116482
1211515
13a739
148653
156d1b
hex5aa1

23201 has 2 divisors, whose sum is σ = 23202. Its totient is φ = 23200.

The previous prime is 23197. The next prime is 23203. The reversal of 23201 is 10232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22801 + 400 = 151^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201 - 22 = 23197 is a prime.

Together with 23203, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (23203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600 + 11601.

It is an arithmetic number, because the mean of its divisors is an integer number (11601).

223201 is an apocalyptic number.

It is an amenable number.

23201 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201 is an equidigital number, since it uses as much as digits as its factorization.

23201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 23201 is about 152.3187447427. The cubic root of 23201 is about 28.5212727195.

Adding to 23201 its reverse (10232), we get a palindrome (33433).

The spelling of 23201 in words is "twenty-three thousand, two hundred one", and thus it is an iban number.