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10031047 = 13771619
BaseRepresentation
bin100110010000…
…111111000111
3200212122000021
4212100333013
510031443142
6555000011
7151156015
oct46207707
920778007
1010031047
115731524
123439007
132102a40
1414918b5
15d32267
hex990fc7

10031047 has 4 divisors (see below), whose sum is σ = 10802680. Its totient is φ = 9259416.

The previous prime is 10031041. The next prime is 10031051. The reversal of 10031047 is 74013001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10031047 - 27 = 10030919 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 10031047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031041) 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, 385797 + ... + 385822.

It is an arithmetic number, because the mean of its divisors is an integer number (2700670).

Almost surely, 210031047 is an apocalyptic number.

10031047 is a deficient number, since it is larger than the sum of its proper divisors (771633).

10031047 is an equidigital number, since it uses as much as digits as its factorization.

10031047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771632.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 10031047 is about 3167.1828175841. The cubic root of 10031047 is about 215.6662011026. Note that the first 3 decimals are identical.

Adding to 10031047 its reverse (74013001), we get a palindrome (84044048).

The spelling of 10031047 in words is "ten million, thirty-one thousand, forty-seven".

Divisors: 1 13 771619 10031047