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6869131 = 18137951
BaseRepresentation
bin11010001101000010001011
3110220222200021
4122031002023
53224303011
6403121311
7112246423
oct32150213
913828607
106869131
113971975
122373237
131566799
14cab483
1590a471
hex68d08b

6869131 has 4 divisors (see below), whose sum is σ = 6907264. Its totient is φ = 6831000.

The previous prime is 6869113. The next prime is 6869183. The reversal of 6869131 is 1319686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1319686 = 2659843.

It is a cyclic number.

It is not a de Polignac number, because 6869131 - 217 = 6738059 is a prime.

It is a super-2 number, since 2×68691312 = 94369921390322, which contains 22 as substring.

It is a Duffinian number.

6869131 is a lucky number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (6869101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18795 + ... + 19156.

It is an arithmetic number, because the mean of its divisors is an integer number (1726816).

Almost surely, 26869131 is an apocalyptic number.

6869131 is a deficient number, since it is larger than the sum of its proper divisors (38133).

6869131 is a wasteful number, since it uses less digits than its factorization.

6869131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38132.

The product of its digits is 7776, while the sum is 34.

The square root of 6869131 is about 2620.9027070840. The cubic root of 6869131 is about 190.0934996873.

The spelling of 6869131 in words is "six million, eight hundred sixty-nine thousand, one hundred thirty-one".

Divisors: 1 181 37951 6869131