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231960012 = 22353364717
BaseRepresentation
bin11011101001101…
…10110111001100
3121011110210022120
431310312313030
5433340210022
635003412540
75514425154
oct1564666714
9534423276
10231960012
11109a31a99
1265824150
133909745b
1422b41764
151556dd5c
hexdd36dcc

231960012 has 24 divisors (see below), whose sum is σ = 551453616. Its totient is φ = 75860928.

The previous prime is 231959989. The next prime is 231960013. The reversal of 231960012 is 210069132.

It is not an unprimeable number, because it can be changed into a prime (231960013) 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, 181723 + ... + 182994.

It is an arithmetic number, because the mean of its divisors is an integer number (22977234).

Almost surely, 2231960012 is an apocalyptic number.

It is an amenable number.

231960012 is an abundant number, since it is smaller than the sum of its proper divisors (319493604).

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

231960012 is a wasteful number, since it uses less digits than its factorization.

231960012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364777 (or 364775 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 231960012 is about 15230.2334847500. The cubic root of 231960012 is about 614.4280597163.

The spelling of 231960012 in words is "two hundred thirty-one million, nine hundred sixty thousand, twelve".

Divisors: 1 2 3 4 6 12 53 106 159 212 318 636 364717 729434 1094151 1458868 2188302 4376604 19330001 38660002 57990003 77320004 115980006 231960012