Is 231358489 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 231 358 489 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 231 358 489, the only two divisors are 1 and 231 358 489. Therefore 231 358 489 is a prime number.
As a consequence, 231 358 489 is only a multiple of 1 and 231 358 489.
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Since 231358489 is a prime number, 231358489 is also a deficient number, that is to say 231358489 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 231358489 without 231358489 itself (that is 1, by definition!).
