43319 has 2 divisors, whose sum is σ = 43320. Its totient is φ = 43318.

The previous prime is 43313. The next prime is 43321. The reversal of 43319 is 91334.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43319 - 2⁸ = 43063 is a prime.

It is a super-2 number, since 2×43319² = 3753071522, which contains 22 as substring.

Together with 43321, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 43319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21659 + 21660.

It is an arithmetic number, because the mean of its divisors is an integer number (21660).

2⁴³³¹⁹ is an apocalyptic number.

43319 is a deficient number, since it is larger than the sum of its proper divisors (1).

43319 is an equidigital number, since it uses as much as digits as its factorization.

43319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 43319 is about 208.1321695462. The cubic root of 43319 is about 35.1204016641.

The spelling of 43319 in words is "forty-three thousand, three hundred nineteen".