243119 has 2 divisors, whose sum is σ = 243120. Its totient is φ = 243118.

The previous prime is 243109. The next prime is 243121. The reversal of 243119 is 911342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243119 - 2⁸ = 242863 is a prime.

It is a super-2 number, since 2×243119² = 118213696322, which contains 22 as substring.

Together with 243121, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₂₁₄₇₆ and since 243119 and 21476 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243109) by changing a digit.

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 as a sum of consecutive naturals, namely, 121559 + 121560.

It is an arithmetic number, because the mean of its divisors is an integer number (121560).

2²⁴³¹¹⁹ is an apocalyptic number.

243119 is a deficient number, since it is larger than the sum of its proper divisors (1).

243119 is an equidigital number, since it uses as much as digits as its factorization.

243119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 243119 is about 493.0709888038. The cubic root of 243119 is about 62.4126994479.

The spelling of 243119 in words is "two hundred forty-three thousand, one hundred nineteen".