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222331223 = 223997001
BaseRepresentation
bin11010100000010…
…00000101010111
3120111100121002202
431100020011113
5423404044343
634021155115
75336532662
oct1520100527
9514317082
10222331223
11104555814
126255ba9b
13370a584a
14217566d9
15147badb8
hexd408157

222331223 has 4 divisors (see below), whose sum is σ = 223328448. Its totient is φ = 221334000.

The previous prime is 222331189. The next prime is 222331231. The reversal of 222331223 is 322133222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222331223 - 26 = 222331159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222331195 and 222331204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222331243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498278 + ... + 498723.

It is an arithmetic number, because the mean of its divisors is an integer number (55832112).

Almost surely, 2222331223 is an apocalyptic number.

222331223 is a deficient number, since it is larger than the sum of its proper divisors (997225).

222331223 is an equidigital number, since it uses as much as digits as its factorization.

222331223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997224.

The product of its digits is 864, while the sum is 20.

The square root of 222331223 is about 14910.7753990193. The cubic root of 222331223 is about 605.8058818686.

Adding to 222331223 its reverse (322133222), we get a palindrome (544464445).

The spelling of 222331223 in words is "two hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty-three".

Divisors: 1 223 997001 222331223