540343 has 2 divisors, whose sum is σ = 540344. Its totient is φ = 540342.

The previous prime is 540307. The next prime is 540347. The reversal of 540343 is 343045.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 540343 - 2¹⁷ = 409271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270171 + 270172.

It is an arithmetic number, because the mean of its divisors is an integer number (270172).

2⁵⁴⁰³⁴³ is an apocalyptic number.

540343 is a deficient number, since it is larger than the sum of its proper divisors (1).

540343 is an equidigital number, since it uses as much as digits as its factorization.

540343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 540343 is about 735.0802677259. The cubic root of 540343 is about 81.4497664272.

Adding to 540343 its reverse (343045), we get a palindrome (883388).

The spelling of 540343 in words is "five hundred forty thousand, three hundred forty-three".