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223081969 = 1126975391
BaseRepresentation
bin11010100101111…
…11010111110001
3120112202201221011
431102333113301
5424102110334
634045230521
75346110515
oct1522772761
9515681834
10223081969
11104a18870
1262862441
13372a9486
14218b0145
15148b8564
hexd4bf5f1

223081969 has 8 divisors (see below), whose sum is σ = 244270080. Its totient is φ = 202045200.

The previous prime is 223081967. The next prime is 223081981. The reversal of 223081969 is 969180322.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223081969 - 21 = 223081967 is a prime.

It is a super-3 number, since 3×2230819693 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223081961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34737 + ... + 40654.

It is an arithmetic number, because the mean of its divisors is an integer number (30533760).

Almost surely, 2223081969 is an apocalyptic number.

It is an amenable number.

223081969 is a deficient number, since it is larger than the sum of its proper divisors (21188111).

223081969 is a wasteful number, since it uses less digits than its factorization.

223081969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75671.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 223081969 is about 14935.9287960274. The cubic root of 223081969 is about 606.4869908610.

The spelling of 223081969 in words is "two hundred twenty-three million, eighty-one thousand, nine hundred sixty-nine".

Divisors: 1 11 269 2959 75391 829301 20280179 223081969