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112310221 = 1091030369
BaseRepresentation
bin1101011000110…
…11011111001101
321211022221122211
412230123133031
5212222411341
615051110421
72532423022
oct654333715
9254287584
10112310221
115843a371
1231742411
131a363a6a
1410cb7549
159cd7181
hex6b1b7cd

112310221 has 4 divisors (see below), whose sum is σ = 113340700. Its totient is φ = 111279744.

The previous prime is 112310171. The next prime is 112310239. The reversal of 112310221 is 122013211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 102292996 + 10017225 = 10114^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 112310221 - 211 = 112308173 is a prime.

It is a super-2 number, since 2×1123102212 = 25227171482137682, 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 (112310621) 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 3 ways as a sum of consecutive naturals, for example, 515076 + ... + 515293.

It is an arithmetic number, because the mean of its divisors is an integer number (28335175).

Almost surely, 2112310221 is an apocalyptic number.

It is an amenable number.

112310221 is a deficient number, since it is larger than the sum of its proper divisors (1030479).

112310221 is a wasteful number, since it uses less digits than its factorization.

112310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030478.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 112310221 is about 10597.6516738379. The cubic root of 112310221 is about 482.4730882464.

Adding to 112310221 its reverse (122013211), we get a palindrome (234323432).

The spelling of 112310221 in words is "one hundred twelve million, three hundred ten thousand, two hundred twenty-one".

Divisors: 1 109 1030369 112310221