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10001131 = 77120123
BaseRepresentation
bin100110001001…
…101011101011
3200211002222021
4212021223223
510030014011
6554205311
7151002550
oct46115353
920732867
1010001131
115710aa8
123423837
1320c223a
141484a27
15d28471
hex989aeb

10001131 has 8 divisors (see below), whose sum is σ = 11591424. Its totient is φ = 8451240.

The previous prime is 10001119. The next prime is 10001203. The reversal of 10001131 is 13110001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10001131 - 211 = 9999083 is a prime.

It is a super-2 number, since 2×100011312 = 200045242558322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001231) 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 7 ways as a sum of consecutive naturals, for example, 9565 + ... + 10558.

It is an arithmetic number, because the mean of its divisors is an integer number (1448928).

Almost surely, 210001131 is an apocalyptic number.

10001131 is a deficient number, since it is larger than the sum of its proper divisors (1590293).

10001131 is an equidigital number, since it uses as much as digits as its factorization.

10001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201.

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 10001131 is about 3162.4564819140. The cubic root of 10001131 is about 215.4515909158.

Adding to 10001131 its reverse (13110001), we get a palindrome (23111132).

It can be divided in two parts, 10001 and 131, that multiplied together give a palindrome (1310131).

The spelling of 10001131 in words is "ten million, one thousand, one hundred thirty-one".

Divisors: 1 7 71 497 20123 140861 1428733 10001131