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6851131 = 72891571
BaseRepresentation
bin11010001000101000111011
3110220001222121
4122020220323
53223214011
6402502111
7112143100
oct32105073
913801877
106851131
11395a3a1
122364937
13155b531
14ca4aa7
15904e71
hex688a3b

6851131 has 12 divisors (see below), whose sum is σ = 8064360. Its totient is φ = 5802720.

The previous prime is 6851129. The next prime is 6851149. The reversal of 6851131 is 1311586.

It is not a de Polignac number, because 6851131 - 21 = 6851129 is a prime.

It is a super-2 number, since 2×68511312 = 93875991958322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6851096 and 6851105.

It is not an unprimeable number, because it can be changed into a prime (6851101) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3576 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (672030).

Almost surely, 26851131 is an apocalyptic number.

6851131 is a deficient number, since it is larger than the sum of its proper divisors (1213229).

6851131 is a wasteful number, since it uses less digits than its factorization.

6851131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674 (or 1667 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 6851131 is about 2617.4665231861. The cubic root of 6851131 is about 189.9273129163.

The spelling of 6851131 in words is "six million, eight hundred fifty-one thousand, one hundred thirty-one".

Divisors: 1 7 49 89 623 1571 4361 10997 76979 139819 978733 6851131