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231344323 = 7192831103
BaseRepresentation
bin11011100101000…
…00100011000011
3121010022111202021
431302200203003
5433211004243
634542302311
75506252150
oct1562404303
9533274667
10231344323
11109651461
1265587997
1338c10142
1422a21227
151549b6ed
hexdca08c3

231344323 has 24 divisors (see below), whose sum is σ = 282659328. Its totient is φ = 185426928.

The previous prime is 231344317. The next prime is 231344383. The reversal of 231344323 is 323443132.

It is not a de Polignac number, because 231344323 - 25 = 231344291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231344383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209190 + ... + 210292.

It is an arithmetic number, because the mean of its divisors is an integer number (11777472).

Almost surely, 2231344323 is an apocalyptic number.

231344323 is a deficient number, since it is larger than the sum of its proper divisors (51315005).

231344323 is a wasteful number, since it uses less digits than its factorization.

231344323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1212 counting only the distinct ones).

The product of its digits is 5184, while the sum is 25.

The square root of 231344323 is about 15210.0073307017. The cubic root of 231344323 is about 613.8839547336.

Adding to 231344323 its reverse (323443132), we get a palindrome (554787455).

The spelling of 231344323 in words is "two hundred thirty-one million, three hundred forty-four thousand, three hundred twenty-three".

Divisors: 1 7 19 83 133 361 581 1103 1577 2527 7721 11039 20957 29963 91549 146699 209741 398183 640843 1739431 2787281 12176017 33049189 231344323