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220103231 = 631734843
BaseRepresentation
bin11010001111010…
…00001000111111
3120100011101212112
431013220020333
5422321300411
633501324235
75311563245
oct1507501077
9510141775
10220103231
111032738a7
126186667b
13367a56ca
1421336795
15144cab8b
hexd1e823f

220103231 has 4 divisors (see below), whose sum is σ = 220144392. Its totient is φ = 220062072.

The previous prime is 220103227. The next prime is 220103237. The reversal of 220103231 is 132301022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220103231 - 22 = 220103227 is a prime.

It is a super-2 number, since 2×2201032312 = 96890864593278722, 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 (220103237) 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, 11105 + ... + 23738.

It is an arithmetic number, because the mean of its divisors is an integer number (55036098).

Almost surely, 2220103231 is an apocalyptic number.

220103231 is a deficient number, since it is larger than the sum of its proper divisors (41161).

220103231 is an equidigital number, since it uses as much as digits as its factorization.

220103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41160.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 220103231 is about 14835.8764823653. The cubic root of 220103231 is about 603.7754810376.

Adding to 220103231 its reverse (132301022), we get a palindrome (352404253).

The spelling of 220103231 in words is "two hundred twenty million, one hundred three thousand, two hundred thirty-one".

Divisors: 1 6317 34843 220103231