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231130874 = 21323338153
BaseRepresentation
bin11011100011011…
…00011011111010
3121002220122221202
431301230123322
5433132141444
634533534202
75504402642
oct1561543372
9532818852
10231130874
11109516057
12654a4362
1338b66c40
14229a7522
151545834e
hexdc6c6fa

231130874 has 16 divisors (see below), whose sum is σ = 374977512. Its totient is φ = 106215168.

The previous prime is 231130873. The next prime is 231130927. The reversal of 231130874 is 478031132.

It can be written as a sum of positive squares in 4 ways, for example, as 151117849 + 80013025 = 12293^2 + 8945^2 .

It is not an unprimeable number, because it can be changed into a prime (231130873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13019 + ... + 25134.

Almost surely, 2231130874 is an apocalyptic number.

231130874 is a deficient number, since it is larger than the sum of its proper divisors (143846638).

231130874 is a wasteful number, since it uses less digits than its factorization.

231130874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38401.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 231130874 is about 15202.9889824337. The cubic root of 231130874 is about 613.6950973712.

The spelling of 231130874 in words is "two hundred thirty-one million, one hundred thirty thousand, eight hundred seventy-four".

Divisors: 1 2 13 26 233 466 3029 6058 38153 76306 495989 991978 8889649 17779298 115565437 231130874