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12130623 = 321638269
BaseRepresentation
bin101110010001…
…100100111111
3211211022002100
4232101210333
511101134443
61112000143
7205052151
oct56214477
924738070
1012130623
116935a0a
124090053
1326895ab
14187aad1
1510e93d3
hexb9193f

12130623 has 12 divisors (see below), whose sum is σ = 17631640. Its totient is φ = 8036496.

The previous prime is 12130621. The next prime is 12130627. The reversal of 12130623 is 32603121.

12130623 is a `hidden beast` number, since 12 + 1 + 30 + 623 = 666.

12130623 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12130623 - 21 = 12130621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12130596 and 12130605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2668 + ... + 5601.

Almost surely, 212130623 is an apocalyptic number.

12130623 is a deficient number, since it is larger than the sum of its proper divisors (5501017).

12130623 is a wasteful number, since it uses less digits than its factorization.

12130623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8438 (or 8435 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12130623 is about 3482.9043914526. The cubic root of 12130623 is about 229.7705525283.

Adding to 12130623 its reverse (32603121), we get a palindrome (44733744).

The spelling of 12130623 in words is "twelve million, one hundred thirty thousand, six hundred twenty-three".

Divisors: 1 3 9 163 489 1467 8269 24807 74421 1347847 4043541 12130623