340240133 has 4 divisors (see below), whose sum is σ = 340795788. Its totient is φ = 339684480.

The previous prime is 340240129. The next prime is 340240171. The reversal of 340240133 is 331042043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331042043 = 6121 ⋅54083.

It can be written as a sum of positive squares in 2 ways, for example, as 178008964 + 162231169 = 13342^2 + 12737^2 .

It is a cyclic number.

It is not a de Polignac number, because 340240133 - 2² = 340240129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340240183) 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, 276908 + ... + 278133.

It is an arithmetic number, because the mean of its divisors is an integer number (85198947).

Almost surely, 2^340240133 is an apocalyptic number.

It is an amenable number.

340240133 is a deficient number, since it is larger than the sum of its proper divisors (555655).

340240133 is an equidigital number, since it uses as much as digits as its factorization.

340240133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555654.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 340240133 is about 18445.5992854664. The cubic root of 340240133 is about 698.1174813133.

Adding to 340240133 its reverse (331042043), we get a palindrome (671282176).

The spelling of 340240133 in words is "three hundred forty million, two hundred forty thousand, one hundred thirty-three".