343561331 has 2 divisors, whose sum is σ = 343561332. Its totient is φ = 343561330.

The previous prime is 343561321. The next prime is 343561397. The reversal of 343561331 is 133165343.

It is a weak prime.

It is an emirp because it is prime and its reverse (133165343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343561331 - 2²² = 339367027 is a prime.

It is a super-2 number, since 2×343561331² = 236068776316983122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 343561294 and 343561303.

It is not a weakly prime, because it can be changed into another prime (343561321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171780665 + 171780666.

It is an arithmetic number, because the mean of its divisors is an integer number (171780666).

Almost surely, 2^343561331 is an apocalyptic number.

343561331 is a deficient number, since it is larger than the sum of its proper divisors (1).

343561331 is an equidigital number, since it uses as much as digits as its factorization.

343561331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 29.

The square root of 343561331 is about 18535.4074948462. The cubic root of 343561331 is about 700.3816497046.

The spelling of 343561331 in words is "three hundred forty-three million, five hundred sixty-one thousand, three hundred thirty-one".