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1113104221 = 8940131189
BaseRepresentation
bin100001001011000…
…1001111101011101
32212120111112221021
41002112021331131
54234423313341
6302241404141
736404141545
oct10226117535
92776445837
101113104221
11521355749
12270939651
131497bb468
14a7b90325
1567ac39d1
hex42589f5d

1113104221 has 8 divisors (see below), whose sum is σ = 1128454200. Its totient is φ = 1097817600.

The previous prime is 1113104191. The next prime is 1113104231. The reversal of 1113104221 is 1224013111.

It can be written as a sum of positive squares in 4 ways, for example, as 113848900 + 999255321 = 10670^2 + 31611^2 .

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 1113104221 - 27 = 1113104093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113104195 and 1113104204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113104231) 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, 20095 + ... + 51283.

It is an arithmetic number, because the mean of its divisors is an integer number (141056775).

Almost surely, 21113104221 is an apocalyptic number.

It is an amenable number.

1113104221 is a deficient number, since it is larger than the sum of its proper divisors (15349979).

1113104221 is an equidigital number, since it uses as much as digits as its factorization.

1113104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31679.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1113104221 is about 33363.2165865343. The cubic root of 1113104221 is about 1036.3631043001.

Adding to 1113104221 its reverse (1224013111), we get a palindrome (2337117332).

The spelling of 1113104221 in words is "one billion, one hundred thirteen million, one hundred four thousand, two hundred twenty-one".

Divisors: 1 89 401 31189 35689 2775821 12506789 1113104221