343327781 has 8 divisors (see below), whose sum is σ = 363427680. Its totient is φ = 323778672.

The previous prime is 343327763. The next prime is 343327783. The reversal of 343327781 is 187723343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 343327781 - 2¹⁰ = 343326757 is a prime.

It is a super-2 number, since 2×343327781² = 235747930412767922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343327783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136415 + ... + 138908.

It is an arithmetic number, because the mean of its divisors is an integer number (45428460).

Almost surely, 2^343327781 is an apocalyptic number.

It is an amenable number.

343327781 is a deficient number, since it is larger than the sum of its proper divisors (20099899).

343327781 is a wasteful number, since it uses less digits than its factorization.

343327781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275395.

The product of its digits is 84672, while the sum is 38.

The square root of 343327781 is about 18529.1063195179. The cubic root of 343327781 is about 700.2229092809. Note that the first 3 decimals are identical.

The spelling of 343327781 in words is "three hundred forty-three million, three hundred twenty-seven thousand, seven hundred eighty-one".