343340343530381 has 2 divisors, whose sum is σ = 343340343530382. Its totient is φ = 343340343530380.

The previous prime is 343340343530369. The next prime is 343340343530399. The reversal of 343340343530381 is 183035343043343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270107055584356 + 73233287946025 = 16434934^2 + 8557645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343340343530381 is a prime.

It is a super-2 number, since 2×343340343530381² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343340343530581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171670171765190 + 171670171765191.

It is an arithmetic number, because the mean of its divisors is an integer number (171670171765191).

Almost surely, 2^{343340343530381} is an apocalyptic number.

It is an amenable number.

343340343530381 is a deficient number, since it is larger than the sum of its proper divisors (1).

343340343530381 is an equidigital number, since it uses as much as digits as its factorization.

343340343530381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 47.

The spelling of 343340343530381 in words is "three hundred forty-three trillion, three hundred forty billion, three hundred forty-three million, five hundred thirty thousand, three hundred eighty-one".