340320433 has 4 divisors (see below), whose sum is σ = 360339300. Its totient is φ = 320301568.

The previous prime is 340320391. The next prime is 340320439. The reversal of 340320433 is 334023043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334023043 = 23 ⋅14522741.

It can be written as a sum of positive squares in 2 ways, for example, as 184769649 + 155550784 = 13593^2 + 12472^2 .

It is a cyclic number.

It is not a de Polignac number, because 340320433 - 2⁹ = 340319921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340320439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10009408 + ... + 10009441.

It is an arithmetic number, because the mean of its divisors is an integer number (90084825).

Almost surely, 2^340320433 is an apocalyptic number.

It is an amenable number.

340320433 is a deficient number, since it is larger than the sum of its proper divisors (20018867).

340320433 is a wasteful number, since it uses less digits than its factorization.

340320433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20018866.

The product of its (nonzero) digits is 2592, while the sum is 22.

The square root of 340320433 is about 18447.7758279962. The cubic root of 340320433 is about 698.1723978450.

Adding to 340320433 its reverse (334023043), we get a palindrome (674343476).

The spelling of 340320433 in words is "three hundred forty million, three hundred twenty thousand, four hundred thirty-three".