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2223213 = 3741071
BaseRepresentation
bin1000011110110001101101
311011221200020
420132301231
51032120323
6115352353
724616446
oct10366155
94157606
102223213
111289373
128b26b9
135cac15
1441c2cd
152ddae3
hex21ec6d

2223213 has 4 divisors (see below), whose sum is σ = 2964288. Its totient is φ = 1482140.

The previous prime is 2223211. The next prime is 2223217. The reversal of 2223213 is 3123222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2223213 - 21 = 2223211 is a prime.

It is a D-number.

It is a Curzon number.

2223213 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2223192 and 2223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370533 + ... + 370538.

It is an arithmetic number, because the mean of its divisors is an integer number (741072).

22223213 is an apocalyptic number.

It is an amenable number.

2223213 is a deficient number, since it is larger than the sum of its proper divisors (741075).

2223213 is an equidigital number, since it uses as much as digits as its factorization.

2223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741074.

The product of its digits is 144, while the sum is 15.

The square root of 2223213 is about 1491.0442649365. The cubic root of 2223213 is about 130.5149789767.

Adding to 2223213 its reverse (3123222), we get a palindrome (5346435).

Subtracting 2223213 from its reverse (3123222), we obtain a palindrome (900009).

The spelling of 2223213 in words is "two million, two hundred twenty-three thousand, two hundred thirteen".

Divisors: 1 3 741071 2223213