340453 has 2 divisors, whose sum is σ = 340454. Its totient is φ = 340452.

The previous prime is 340451. The next prime is 340477. The reversal of 340453 is 354043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 77284 = 513^2 + 278^2 .

It is an emirp because it is prime and its reverse (354043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340453 - 2¹ = 340451 is a prime.

Together with 340451, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 340453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170226 + 170227.

It is an arithmetic number, because the mean of its divisors is an integer number (170227).

2³⁴⁰⁴⁵³ is an apocalyptic number.

It is an amenable number.

340453 is a deficient number, since it is larger than the sum of its proper divisors (1).

340453 is an equidigital number, since it uses as much as digits as its factorization.

340453 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 340453 is about 583.4835044798. The cubic root of 340453 is about 69.8263040463.

Adding to 340453 its reverse (354043), we get a palindrome (694496).

The spelling of 340453 in words is "three hundred forty thousand, four hundred fifty-three".