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10131047 = 19533213
BaseRepresentation
bin100110101001…
…011001100111
3201001201011222
4212221121213
510043143142
61001050555
7152053403
oct46513147
921051158
1010131047
11579a673
123486a5b
132139404
1414ba103
15d51bd2
hex9a9667

10131047 has 4 divisors (see below), whose sum is σ = 10664280. Its totient is φ = 9597816.

The previous prime is 10131041. The next prime is 10131071. The reversal of 10131047 is 74013101.

10131047 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74013101 = 77599539.

It is a cyclic number.

It is not a de Polignac number, because 10131047 - 26 = 10130983 is a prime.

It is a super-2 number, since 2×101310472 = 205276226632418, 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 (10131041) 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, 266588 + ... + 266625.

It is an arithmetic number, because the mean of its divisors is an integer number (2666070).

Almost surely, 210131047 is an apocalyptic number.

10131047 is a deficient number, since it is larger than the sum of its proper divisors (533233).

10131047 is an equidigital number, since it uses as much as digits as its factorization.

10131047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533232.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 10131047 is about 3182.9305678887. The cubic root of 10131047 is about 216.3804950400.

Adding to 10131047 its reverse (74013101), we get a palindrome (84144148).

The spelling of 10131047 in words is "ten million, one hundred thirty-one thousand, forty-seven".

Divisors: 1 19 533213 10131047