340528973 has 4 divisors (see below), whose sum is σ = 340582428. Its totient is φ = 340475520.

The previous prime is 340528949. The next prime is 340528987. The reversal of 340528973 is 379825043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379825043 = 13 ⋅29217311.

It can be written as a sum of positive squares in 2 ways, for example, as 37002889 + 303526084 = 6083^2 + 17422^2 .

It is a cyclic number.

It is not a de Polignac number, because 340528973 - 2¹⁴ = 340512589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340528973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340528073) 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 in 3 ways as a sum of consecutive naturals, for example, 15638 + ... + 30423.

It is an arithmetic number, because the mean of its divisors is an integer number (85145607).

Almost surely, 2^340528973 is an apocalyptic number.

It is an amenable number.

340528973 is a deficient number, since it is larger than the sum of its proper divisors (53455).

340528973 is an equidigital number, since it uses as much as digits as its factorization.

340528973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53454.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 340528973 is about 18453.4271342751. The cubic root of 340528973 is about 698.3149763568.

The spelling of 340528973 in words is "three hundred forty million, five hundred twenty-eight thousand, nine hundred seventy-three".