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231874401 = 31129793067
BaseRepresentation
bin11011101001000…
…01111101100001
3121011022102212210
431310201331201
5433324440101
635001512333
75513620443
oct1564417541
9534272783
10231874401
11109983740
12657a26a9
13390674b5
1422b1c493
15155537d6
hexdd21f61

231874401 has 32 divisors (see below), whose sum is σ = 353433600. Its totient is φ = 133922880.

The previous prime is 231874387. The next prime is 231874421. The reversal of 231874401 is 104478132.

It is not a de Polignac number, because 231874401 - 25 = 231874369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231874421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74070 + ... + 77136.

It is an arithmetic number, because the mean of its divisors is an integer number (11044800).

Almost surely, 2231874401 is an apocalyptic number.

It is an amenable number.

231874401 is a deficient number, since it is larger than the sum of its proper divisors (121559199).

231874401 is a wasteful number, since it uses less digits than its factorization.

231874401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 231874401 is about 15227.4226643907. The cubic root of 231874401 is about 614.3524600863.

The spelling of 231874401 in words is "two hundred thirty-one million, eight hundred seventy-four thousand, four hundred one".

Divisors: 1 3 11 29 33 79 87 237 319 869 957 2291 2607 3067 6873 9201 25201 33737 75603 88943 101211 242293 266829 726879 978373 2665223 2935119 7026497 7995669 21079491 77291467 231874401