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244231 = 1318787
BaseRepresentation
bin111011101000000111
3110102000121
4323220013
530303411
65122411
72035021
oct735007
9412017
10244231
11157549
12b9407
1387220
1465011
154c571
hex3ba07

244231 has 4 divisors (see below), whose sum is σ = 263032. Its totient is φ = 225432.

The previous prime is 244219. The next prime is 244243. The reversal of 244231 is 132442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132442 = 266221.

It is an interprime number because it is at equal distance from previous prime (244219) and next prime (244243).

It is a cyclic number.

It is not a de Polignac number, because 244231 - 25 = 244199 is a prime.

It is a super-2 number, since 2×2442312 = 119297562722, which contains 22 as substring.

It is a Duffinian number.

244231 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244261) 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, 9381 + ... + 9406.

It is an arithmetic number, because the mean of its divisors is an integer number (65758).

2244231 is an apocalyptic number.

244231 is a deficient number, since it is larger than the sum of its proper divisors (18801).

244231 is a wasteful number, since it uses less digits than its factorization.

244231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18800.

The product of its digits is 192, while the sum is 16.

The square root of 244231 is about 494.1973290094. The cubic root of 244231 is about 62.5077110486.

Adding to 244231 its reverse (132442), we get a palindrome (376673).

The spelling of 244231 in words is "two hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 13 18787 244231