Search a number
BaseRepresentation
bin111011000001111
31112110101
413120033
51431343
6351531
7154054
oct73017
945411
1030223
1120786
12155a7
13109ab
14b02b
158e4d
hex760f

30223 has 2 divisors, whose sum is σ = 30224. Its totient is φ = 30222.

The previous prime is 30211. The next prime is 30241. The reversal of 30223 is 32203.

It is a weak prime.

It is an emirp because it is prime and its reverse (32203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30223 - 213 = 22031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15111 + 15112.

It is an arithmetic number, because the mean of its divisors is an integer number (15112).

230223 is an apocalyptic number.

30223 is a deficient number, since it is larger than the sum of its proper divisors (1).

30223 is an equidigital number, since it uses as much as digits as its factorization.

30223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 30223 is about 173.8476344389. The cubic root of 30223 is about 31.1491253951.

Adding to 30223 its reverse (32203), we get a palindrome (62426).

It can be divided in two parts, 3022 and 3, that added together give a square (3025 = 552).

The spelling of 30223 in words is "thirty thousand, two hundred twenty-three".