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231248 = 2497149
BaseRepresentation
bin111000011101010000
3102202012202
4320131100
524344443
64542332
71652123
oct703520
9382182
10231248
11148816
12b19a8
1381344
14603ba
15487b8
hex38750

231248 has 20 divisors (see below), whose sum is σ = 455700. Its totient is φ = 113664.

The previous prime is 231241. The next prime is 231269. The reversal of 231248 is 842132.

It can be written as a sum of positive squares in 2 ways, for example, as 61504 + 169744 = 248^2 + 412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231241) by changing a digit.

231248 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (22785).

2231248 is an apocalyptic number.

It is an amenable number.

231248 is a deficient number, since it is larger than the sum of its proper divisors (224452).

231248 is a wasteful number, since it uses less digits than its factorization.

231248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 248 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 231248 is about 480.8825220363. The cubic root of 231248 is about 61.3798743576.

It can be divided in two parts, 23124 and 8, that added together give a palindrome (23132).

The spelling of 231248 in words is "two hundred thirty-one thousand, two hundred forty-eight".