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10131205 = 57289463
BaseRepresentation
bin100110101001…
…011100000101
3201001201101211
4212221130011
510043144310
61001051421
7152054020
oct46513405
921051354
1010131205
11579a7a7
123486b71
1321394c6
1414ba1b7
15d51c8a
hex9a9705

10131205 has 8 divisors (see below), whose sum is σ = 13894272. Its totient is φ = 6947088.

The previous prime is 10131181. The next prime is 10131211. The reversal of 10131205 is 50213101.

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 10131205 - 215 = 10098437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144697 + ... + 144766.

It is an arithmetic number, because the mean of its divisors is an integer number (1736784).

Almost surely, 210131205 is an apocalyptic number.

It is an amenable number.

10131205 is a deficient number, since it is larger than the sum of its proper divisors (3763067).

10131205 is an equidigital number, since it uses as much as digits as its factorization.

10131205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289475.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 10131205 is about 3182.9553876861. The cubic root of 10131205 is about 216.3816198971.

Adding to 10131205 its reverse (50213101), we get a palindrome (60344306).

The spelling of 10131205 in words is "ten million, one hundred thirty-one thousand, two hundred five".

Divisors: 1 5 7 35 289463 1447315 2026241 10131205