289031 has 2 divisors, whose sum is σ = 289032. Its totient is φ = 289030.
The previous prime is 289021. The next prime is 289033. The reversal of 289031 is 130982.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 289031 - 210 = 288007 is a prime.
It is a super-2 number, since 2×2890312 = 167077837922, which contains 22 as substring.
It is a Sophie Germain prime.
Together with 289033, it forms a pair of twin primes.
It is a Chen prime.
It is a nialpdrome in base 5.
It is a zygodrome in base 5.
It is a junction number, because it is equal to n+sod(n) for n = 288988 and 289006.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289031.
It is not a weakly prime, because it can be changed into another prime (289033) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144515 + 144516.
It is an arithmetic number, because the mean of its divisors is an integer number (144516).
2289031 is an apocalyptic number.
289031 is a deficient number, since it is larger than the sum of its proper divisors (1).
289031 is an equidigital number, since it uses as much as digits as its factorization.
289031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 432, while the sum is 23.
The square root of 289031 is about 537.6160339871. The cubic root of 289031 is about 66.1172540696.
The spelling of 289031 in words is "two hundred eighty-nine thousand, thirty-one".
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