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222103231 = 725385523
BaseRepresentation
bin11010011110100…
…00011010111111
3120110221000100121
431033100122333
5423324300411
634012235411
75334563200
oct1517203277
9513830317
10222103231
1110440a499
126246bb67
1337025b3c
14216d75a7
1514773571
hexd3d06bf

222103231 has 12 divisors (see below), whose sum is σ = 263242872. Its totient is φ = 186780048.

The previous prime is 222103229. The next prime is 222103241. The reversal of 222103231 is 132301222.

It is not a de Polignac number, because 222103231 - 21 = 222103229 is a prime.

It is a super-2 number, since 2×2221032312 = 98659690441278722, 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 (222103241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40165 + ... + 45358.

It is an arithmetic number, because the mean of its divisors is an integer number (21936906).

Almost surely, 2222103231 is an apocalyptic number.

222103231 is a deficient number, since it is larger than the sum of its proper divisors (41139641).

222103231 is an equidigital number, since it uses as much as digits as its factorization.

222103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85590 (or 85583 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 222103231 is about 14903.1282286639. The cubic root of 222103231 is about 605.5987342752.

Adding to 222103231 its reverse (132301222), we get a palindrome (354404453).

The spelling of 222103231 in words is "two hundred twenty-two million, one hundred three thousand, two hundred thirty-one".

Divisors: 1 7 49 53 371 2597 85523 598661 4190627 4532719 31729033 222103231