340020320023121 has 4 divisors (see below), whose sum is σ = 340027954625892. Its totient is φ = 340012685420352.

The previous prime is 340020320023117. The next prime is 340020320023129. The reversal of 340020320023121 is 121320023020043.

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 337445694393025 + 2574625630096 = 18369695^2 + 1604564^2 .

It is a cyclic number.

It is not a de Polignac number, because 340020320023121 - 2² = 340020320023117 is a prime.

It is a super-2 number, since 2×340020320023121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340020320023129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817234580 + ... + 3817323653.

It is an arithmetic number, because the mean of its divisors is an integer number (85006988656473).

Almost surely, 2^{340020320023121} is an apocalyptic number.

It is an amenable number.

340020320023121 is a deficient number, since it is larger than the sum of its proper divisors (7634602771).

340020320023121 is an equidigital number, since it uses as much as digits as its factorization.

340020320023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634602770.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 340020320023121 its reverse (121320023020043), we get a palindrome (461340343043164).

The spelling of 340020320023121 in words is "three hundred forty trillion, twenty billion, three hundred twenty million, twenty-three thousand, one hundred twenty-one".