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231133112 = 2374127377
BaseRepresentation
bin11011100011011…
…00111110111000
3121002220210000122
431301230332320
5433132224422
634533552412
75504412320
oct1561547670
9532823018
10231133112
11109517801
12654a5708
1338b67c72
14229a8280
1515458d42
hexdc6cfb8

231133112 has 16 divisors (see below), whose sum is σ = 495285360. Its totient is φ = 99057024.

The previous prime is 231133109. The next prime is 231133153. The reversal of 231133112 is 211331132.

Adding to 231133112 its reverse (211331132), we get a palindrome (442464244).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2063633 + ... + 2063744.

It is an arithmetic number, because the mean of its divisors is an integer number (30955335).

Almost surely, 2231133112 is an apocalyptic number.

It is an amenable number.

231133112 is an abundant number, since it is smaller than the sum of its proper divisors (264152248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231133112 is a wasteful number, since it uses less digits than its factorization.

231133112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127390 (or 4127386 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 231133112 is about 15203.0625862028. The cubic root of 231133112 is about 613.6970781324.

The spelling of 231133112 in words is "two hundred thirty-one million, one hundred thirty-three thousand, one hundred twelve".

Divisors: 1 2 4 7 8 14 28 56 4127377 8254754 16509508 28891639 33019016 57783278 115566556 231133112