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12131022 = 232021837
BaseRepresentation
bin101110010001…
…101011001110
3211211022122010
4232101223032
511101143042
61112002050
7205053261
oct56215316
924738563
1012131022
116936242
124090326
132689827
14187acd8
1510e959c
hexb91ace

12131022 has 8 divisors (see below), whose sum is σ = 24262056. Its totient is φ = 4043672.

The previous prime is 12131017. The next prime is 12131027. The reversal of 12131022 is 22013121.

It is an interprime number because it is at equal distance from previous prime (12131017) and next prime (12131027).

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

12131022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12130989 and 12131007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010913 + ... + 1010924.

It is an arithmetic number, because the mean of its divisors is an integer number (3032757).

Almost surely, 212131022 is an apocalyptic number.

12131022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131022 is a wasteful number, since it uses less digits than its factorization.

12131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021842.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12131022 is about 3482.9616707624. The cubic root of 12131022 is about 229.7730717022.

Adding to 12131022 its reverse (22013121), we get a palindrome (34144143).

The spelling of 12131022 in words is "twelve million, one hundred thirty-one thousand, twenty-two".

Divisors: 1 2 3 6 2021837 4043674 6065511 12131022