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223109453 = 723260251
BaseRepresentation
bin11010100110001…
…10000101001101
3120112211010122002
431103012011031
5424104000303
634050002045
75346253610
oct1523060515
9515733562
10223109453
11104a37486
1262876325
13372b8b38
14218ba177
15148c1788
hexd4c614d

223109453 has 12 divisors (see below), whose sum is σ = 266554848. Its totient is φ = 182919000.

The previous prime is 223109443. The next prime is 223109483. The reversal of 223109453 is 354901322.

It is not a de Polignac number, because 223109453 - 28 = 223109197 is a prime.

It is a super-3 number, since 3×2231094533 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223109443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26423 + ... + 33828.

It is an arithmetic number, because the mean of its divisors is an integer number (22212904).

Almost surely, 2223109453 is an apocalyptic number.

223109453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

223109453 is a deficient number, since it is larger than the sum of its proper divisors (43445395).

223109453 is an equidigital number, since it uses as much as digits as its factorization.

223109453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60304 (or 60281 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 223109453 is about 14936.8488309951. The cubic root of 223109453 is about 606.5118965104.

The spelling of 223109453 in words is "two hundred twenty-three million, one hundred nine thousand, four hundred fifty-three".

Divisors: 1 7 23 161 529 3703 60251 421757 1385773 9700411 31872779 223109453