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231055531343 = 72131070933871
BaseRepresentation
bin1101011100101111111…
…0111001110101001111
3211002101122202010122222
43113023332321311033
512241200204000333
6254051225525555
722456525416500
oct3271376716517
9732348663588
10231055531343
1189a9890758a
12389440438bb
1318a33295420
14b27c7b0ba7
156024a9d298
hex35cbfb9d4f

231055531343 has 24 divisors (see below), whose sum is σ = 289489757760. Its totient is φ = 182790699840.

The previous prime is 231055531313. The next prime is 231055531349. The reversal of 231055531343 is 343135550132.

It is a happy number.

It is not a de Polignac number, because 231055531343 - 28 = 231055531087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231055531349) 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, 6804698 + ... + 6838568.

It is an arithmetic number, because the mean of its divisors is an integer number (12062073240).

Almost surely, 2231055531343 is an apocalyptic number.

231055531343 is a deficient number, since it is larger than the sum of its proper divisors (58434226417).

231055531343 is a wasteful number, since it uses less digits than its factorization.

231055531343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44607 (or 44600 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 35.

The spelling of 231055531343 in words is "two hundred thirty-one billion, fifty-five million, five hundred thirty-one thousand, three hundred forty-three".

Divisors: 1 7 13 49 91 637 10709 33871 74963 139217 237097 440323 524741 974519 1659679 3082261 6821633 21575827 362724539 2539071773 4715419007 17773502411 33007933049 231055531343