343849781117 has 16 divisors (see below), whose sum is σ = 346914014832. Its totient is φ = 340801413120.

The previous prime is 343849781039. The next prime is 343849781123. The reversal of 343849781117 is 711187948343.

It can be written as a sum of positive squares in 8 ways, for example, as 3197789401 + 340651991716 = 56549^2 + 583654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343849781117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343849781137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64911413 + ... + 64916709.

It is an arithmetic number, because the mean of its divisors is an integer number (21682125927).

Almost surely, 2^343849781117 is an apocalyptic number.

It is an amenable number.

343849781117 is a deficient number, since it is larger than the sum of its proper divisors (3064233715).

343849781117 is a wasteful number, since it uses less digits than its factorization.

343849781117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688.

The product of its digits is 4064256, while the sum is 56.

The spelling of 343849781117 in words is "three hundred forty-three billion, eight hundred forty-nine million, seven hundred eighty-one thousand, one hundred seventeen".