343318531 has 2 divisors, whose sum is σ = 343318532. Its totient is φ = 343318530.

The previous prime is 343318511. The next prime is 343318537. The reversal of 343318531 is 135813343.

It is a strong prime.

It is an emirp because it is prime and its reverse (135813343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343318531 - 2¹⁷ = 343187459 is a prime.

It is a super-2 number, since 2×343318531² = 235735227455995922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 343318493 and 343318502.

It is not a weakly prime, because it can be changed into another prime (343318537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171659265 + 171659266.

It is an arithmetic number, because the mean of its divisors is an integer number (171659266).

Almost surely, 2^343318531 is an apocalyptic number.

343318531 is a deficient number, since it is larger than the sum of its proper divisors (1).

343318531 is an equidigital number, since it uses as much as digits as its factorization.

343318531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 343318531 is about 18528.8567105475. The cubic root of 343318531 is about 700.2166207131.

The spelling of 343318531 in words is "three hundred forty-three million, three hundred eighteen thousand, five hundred thirty-one".