340320144121 has 4 divisors (see below), whose sum is σ = 349517985892. Its totient is φ = 331122302352.

The previous prime is 340320144103. The next prime is 340320144133. The reversal of 340320144121 is 121441023043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121441023043 = 191783 ⋅633221.

It can be written as a sum of positive squares in 2 ways, for example, as 217934917225 + 122385226896 = 466835^2 + 349836^2 .

It is a cyclic number.

It is not a de Polignac number, because 340320144121 - 2¹¹ = 340320142073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340320144191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4598920830 + ... + 4598920903.

It is an arithmetic number, because the mean of its divisors is an integer number (87379496473).

Almost surely, 2^340320144121 is an apocalyptic number.

It is an amenable number.

340320144121 is a deficient number, since it is larger than the sum of its proper divisors (9197841771).

340320144121 is an equidigital number, since it uses as much as digits as its factorization.

340320144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9197841770.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 340320144121 its reverse (121441023043), we get a palindrome (461761167164).

The spelling of 340320144121 in words is "three hundred forty billion, three hundred twenty million, one hundred forty-four thousand, one hundred twenty-one".