343995331 has 4 divisors (see below), whose sum is σ = 344078064. Its totient is φ = 343912600.

The previous prime is 343995319. The next prime is 343995341. The reversal of 343995331 is 133599343.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 343995331 - 2⁵ = 343995299 is a prime.

It is a super-2 number, since 2×343995331² = 236665575499599122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343995341) 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 3 ways as a sum of consecutive naturals, for example, 34780 + ... + 43561.

It is an arithmetic number, because the mean of its divisors is an integer number (86019516).

Almost surely, 2^343995331 is an apocalyptic number.

343995331 is a deficient number, since it is larger than the sum of its proper divisors (82733).

343995331 is an equidigital number, since it uses as much as digits as its factorization.

343995331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82732.

The product of its digits is 131220, while the sum is 40.

The square root of 343995331 is about 18547.1111227598. Note that the first 4 decimals coincide. The cubic root of 343995331 is about 700.6764420309.

The spelling of 343995331 in words is "three hundred forty-three million, nine hundred ninety-five thousand, three hundred thirty-one".