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231352 = 23112239
BaseRepresentation
bin111000011110111000
3102202100121
4320132320
524400402
64543024
71652332
oct703670
9382317
10231352
11148900
12b1a74
13813c4
1460452
1548837
hex387b8

231352 has 24 divisors (see below), whose sum is σ = 478800. Its totient is φ = 104720.

The previous prime is 231349. The next prime is 231359. The reversal of 231352 is 253132.

231352 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 849 + ... + 1087.

It is an arithmetic number, because the mean of its divisors is an integer number (19950).

2231352 is an apocalyptic number.

231352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239400).

231352 is an abundant number, since it is smaller than the sum of its proper divisors (247448).

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

231352 is a wasteful number, since it uses less digits than its factorization.

231352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 252 counting only the distinct ones).

The product of its digits is 180, while the sum is 16.

The square root of 231352 is about 480.9906443997. The cubic root of 231352 is about 61.3890745095.

Adding to 231352 its reverse (253132), we get a palindrome (484484).

The spelling of 231352 in words is "two hundred thirty-one thousand, three hundred fifty-two".

Divisors: 1 2 4 8 11 22 44 88 121 239 242 478 484 956 968 1912 2629 5258 10516 21032 28919 57838 115676 231352