340312626614021 has 2 divisors, whose sum is σ = 340312626614022. Its totient is φ = 340312626614020.

The previous prime is 340312626614011. The next prime is 340312626614047. The reversal of 340312626614021 is 120416626213043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257547483537796 + 82765143076225 = 16048286^2 + 9097535^2 .

It is a cyclic number.

It is not a de Polignac number, because 340312626614021 - 2¹⁰ = 340312626612997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 340312626614021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340312626614011) 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 as a sum of consecutive naturals, namely, 170156313307010 + 170156313307011.

It is an arithmetic number, because the mean of its divisors is an integer number (170156313307011).

Almost surely, 2^{340312626614021} is an apocalyptic number.

It is an amenable number.

340312626614021 is a deficient number, since it is larger than the sum of its proper divisors (1).

340312626614021 is an equidigital number, since it uses as much as digits as its factorization.

340312626614021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 340312626614021 in words is "three hundred forty trillion, three hundred twelve billion, six hundred twenty-six million, six hundred fourteen thousand, twenty-one".