343874433963121 has 2 divisors, whose sum is σ = 343874433963122. Its totient is φ = 343874433963120.

The previous prime is 343874433963097. The next prime is 343874433963157. The reversal of 343874433963121 is 121369334478343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190165616903025 + 153708817060096 = 13790055^2 + 12397936^2 .

It is a cyclic number.

It is not a de Polignac number, because 343874433963121 - 2¹³ = 343874433954929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343874433963121.

It is not a weakly prime, because it can be changed into another prime (343874433960121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171937216981560 + 171937216981561.

It is an arithmetic number, because the mean of its divisors is an integer number (171937216981561).

Almost surely, 2^{343874433963121} is an apocalyptic number.

It is an amenable number.

343874433963121 is a deficient number, since it is larger than the sum of its proper divisors (1).

343874433963121 is an equidigital number, since it uses as much as digits as its factorization.

343874433963121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 61.

The spelling of 343874433963121 in words is "three hundred forty-three trillion, eight hundred seventy-four billion, four hundred thirty-three million, nine hundred sixty-three thousand, one hundred twenty-one".