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223054231 = 419532349
BaseRepresentation
bin11010100101110…
…00100110010111
3120112201022212211
431102320212113
5424100213411
634044454251
75345633611
oct1522704627
9515638784
10223054231
111049a9a44
126284a387
133729996a
14218a3db1
15148b0221
hexd4b8997

223054231 has 4 divisors (see below), whose sum is σ = 223587000. Its totient is φ = 222521464.

The previous prime is 223054213. The next prime is 223054267. The reversal of 223054231 is 132450322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132450322 = 266225161.

It is a cyclic number.

It is not a de Polignac number, because 223054231 - 25 = 223054199 is a prime.

It is a super-2 number, since 2×2230542312 = 99506379934002722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223054031) 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, 265756 + ... + 266593.

It is an arithmetic number, because the mean of its divisors is an integer number (55896750).

Almost surely, 2223054231 is an apocalyptic number.

223054231 is a deficient number, since it is larger than the sum of its proper divisors (532769).

223054231 is an equidigital number, since it uses as much as digits as its factorization.

223054231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532768.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 223054231 is about 14935.0002008704. Note that the first 3 decimals coincide. The cubic root of 223054231 is about 606.4618529658.

The spelling of 223054231 in words is "two hundred twenty-three million, fifty-four thousand, two hundred thirty-one".

Divisors: 1 419 532349 223054231