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10131271 = 67151213
BaseRepresentation
bin100110101001…
…011101000111
3201001201111021
4212221131013
510043200041
61001052011
7152054143
oct46513507
921051437
1010131271
11579a857
123487007
132139547
1414ba223
15d51cd1
hex9a9747

10131271 has 4 divisors (see below), whose sum is σ = 10282552. Its totient is φ = 9979992.

The previous prime is 10131263. The next prime is 10131281. The reversal of 10131271 is 17213101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17213101 = 66126041.

It is a cyclic number.

It is not a de Polignac number, because 10131271 - 23 = 10131263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131211) 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, 75540 + ... + 75673.

It is an arithmetic number, because the mean of its divisors is an integer number (2570638).

Almost surely, 210131271 is an apocalyptic number.

10131271 is a deficient number, since it is larger than the sum of its proper divisors (151281).

10131271 is an equidigital number, since it uses as much as digits as its factorization.

10131271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151280.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 10131271 is about 3182.9657553923. The cubic root of 10131271 is about 216.3820897706.

Adding to 10131271 its reverse (17213101), we get a palindrome (27344372).

The spelling of 10131271 in words is "ten million, one hundred thirty-one thousand, two hundred seventy-one".

Divisors: 1 67 151213 10131271