340100305 has 4 divisors (see below), whose sum is σ = 408120372. Its totient is φ = 272080240.

The previous prime is 340100303. The next prime is 340100309. The reversal of 340100305 is 503001043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147112641 + 192987664 = 12129^2 + 13892^2 .

It is not a de Polignac number, because 340100305 - 2¹ = 340100303 is a prime.

It is a super-2 number, since 2×340100305² = 231336434922186050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340100303) 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, 34010026 + ... + 34010035.

It is an arithmetic number, because the mean of its divisors is an integer number (102030093).

Almost surely, 2^340100305 is an apocalyptic number.

It is an amenable number.

340100305 is a deficient number, since it is larger than the sum of its proper divisors (68020067).

340100305 is an equidigital number, since it uses as much as digits as its factorization.

340100305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68020066.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 340100305 is about 18441.8086152091. The cubic root of 340100305 is about 698.0218334290.

Adding to 340100305 its reverse (503001043), we get a palindrome (843101348).

The spelling of 340100305 in words is "three hundred forty million, one hundred thousand, three hundred five".