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231271044 = 22319272587
BaseRepresentation
bin11011100100011…
…10101010000100
3121010011210020020
431302032222010
5433201133134
634540535140
75505525414
oct1562165204
9533153206
10231271044
111096013a4
12655514b0
1338bb5994
1422a02644
1515484b49
hexdc8ea84

231271044 has 12 divisors (see below), whose sum is σ = 539632464. Its totient is φ = 77090344.

The previous prime is 231270997. The next prime is 231271063. The reversal of 231271044 is 440172132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9636282 + ... + 9636305.

It is an arithmetic number, because the mean of its divisors is an integer number (44969372).

Almost surely, 2231271044 is an apocalyptic number.

It is an amenable number.

231271044 is an abundant number, since it is smaller than the sum of its proper divisors (308361420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231271044 is a wasteful number, since it uses less digits than its factorization.

231271044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19272594 (or 19272592 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 231271044 is about 15207.5982324626. The cubic root of 231271044 is about 613.8191313681.

The spelling of 231271044 in words is "two hundred thirty-one million, two hundred seventy-one thousand, forty-four".

Divisors: 1 2 3 4 6 12 19272587 38545174 57817761 77090348 115635522 231271044